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2013 Yoder Bio 5
2013 Yoder Bio 5th Hour
| Question | Answer |
|---|---|
| Selective breeding | the process of breeding plants and animals for particular genetic traits. |
| Hybrization | the act of mixing different species or varieties of animals or plants and thus to produce hybrids. |
| Inbreeding | Breed from closely related people or animals, esp. over many generations |
| Biotechnologies | Biotechnology is a field of applied biology that involves the use of living organisms and bioprocesses in engineering |
| Transgenic | Of, relating to, or being an organism whose genome has been altered by the transfer of a gene or genes from another species or breed. |
| Clone | A group of organisms or cells produced asexually from one ancestor or stock, to which they are genetically identical. |
| GM crops | Genetically modified (GM) foods are foods derived from genetically modified organisms. |
| GM animals | A genetically modified organism (GMO) or genetically engineered organism (GEO) is an organism whose genetic material has been altered |
| Gene therapy | The transplantation of normal genes into cells in place of missing or defective ones in order to correct genetic disorders. |
| DNA fingerprinting | The analysis of DNA from samples of body tissues or fluids in order to identify individuals. |
| Forensics | Scientific tests or techniques used in connection with the detection of crime |
| Extinct | species died out |
| Paleontologists | scientist who studies fossils |
| Relative Dating | method of determining the age of a fossil by comparing its placement with that of fossils in other rock layers |
| Index Fossils | distinctive fossil that is used to compare the relative ages of fossils |
| Radiometric Dating | method of determining the age of a sample from the amount of a radioactive isotope to the non |
| Half Life | length of time required for half of the radioactive atoms in a sample to decay |
| Geologic Time Scale | timeline used to represent Earth’s history |
| Eras | major divisions of geologic time; usually divided into two or more periods |
| Periods | divisions of geologic time into which eras are subdivided |
| Plate Tectonics | geologic processes, such as continental drift, volcanoes, and earthquakes, resulting from plate movement |
| Macro Evolution | large |
| Background Extinction | extinction caused by slow and steady process of natural selection |
| Mass Extinction | event during which many species become extinct during a relatively short period of time |
| Gradualism | the evolution of species by gradual accumulation of small genetic changes over long periods of time |
| Centromere | region of a chromosome where the two sister chromatids attach |
| Chromatin | substance found in eukaryotic chromosomes that consists of DNA tightly coiled around histones |
| Crossing | over |
| Differentiation | process in which cells become specialized in structure and function |
| Embryo | developing stage of a multicellular organism |
| G1 phase | cells come out of mitosis; cells increase in size and synthesize new proteins and organelles; a growing phase; the “g” stands for “gap” |
| G2 phase | condenses and prepares for cell division; organelles are produced; usually the shortest phase; prepares for mitosis; after S phase; the “g” stands for “gap” |
| S phase | DNA is put together for replication; strands then double; the “s” stands for “synthesis”; after G1 phase |
| Tetrad | structure containing four chromatids that forms during meiosis |
| Proteins | Macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair. |
| Lipids | Macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes. |
| Carbohydrates | compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is major source of energy for the body. |
| Nucleic Acids | Macromolecule containing hydrogen, oxygen, nitrogen, carbon and phosphorus. |
| Nucleotides | Macromolecule containing hydrogen, oxygen, nitrogen, carbon and phosphorus. |
| Protein monomers | Are known as amino acids which are building blocks |
| Carbohydrate monomers | two simple sugar bonded together. |
| Lipid monomers | Lipids have no monomers some lipids are made up of fatty acids. |
| Nucleic monomer | DNA is just one type of Nucleic monomer. |
| Macromolecules + energy per unit | carbohydrates |
| ATP Produced during Cell Respiration | 36. |
| Calorie vs. calorie | 1000 calories= 1 Calorie. |
| Glycolysis literally means | sugar breaking |
| Products + reactants of glycolysis | Reactants: ATP, NADH, Pyruvates, CO2, Coenzyme A. Products: H20, NADH, ATP. |
| Anaerobic/aerobic | Anaerobic does not need oxygen present. Aerobic needs oxygen present. |
| Which cycle needs O2 | Electron Transport Chain. |
| ETC and role | A series of electron carries in the membrane of the mitochondria in eukaryotic cells. Its role is to pass high energy electrons to oxygen, ultimately producing ATP. |
| Citric acid cycle | Krebs cycle. |
| Sugars | A sweet crystalline substance |
| Amino acid | Important organic compound made from amine and carboxylic acid functional groups, along with a side |
| Monosaccharide | A simple sugar |
| Disaccharide | A sugar composed of two monosaccharide |
| Function of Lipids | contains fat, stores energy |
| Function of carbohydrates | short term energy storage |
| Function of nucleic acid | Allows organisms to transfer genetic information from one generation to the next |
| Function of Proteins | Molecules in our cells |
| Evolution | change over time; the process by which modern organisms have descended from ancient organisms |
| Fossils | preserved remains or traces of ancient organisms |
| Artificial Selection | selective breeding of plants and animals to promote the occurrence of desirable traits in offspring |
| Lamarck | Lamarck suggested that organisms could change during their lifetimes by selectively using or not using certain parts of their bodies. He also suggested that individuals could pass these traits on to their offspring. |
| Darwin | Darwin developed a scientific theory of biological evolution that explains how modern organisms evolved over long periods of time through descent of common ancestors. |
| Hutton and Lyell | Hutton and lyell concluded that earth is extremely old and that the processes that changed earth in the past are the same processes that operate in the present. |
| Adaptation | heritable characteristics that increase an organism’s ability to survive and reproduce in an environment |
| Fitness | how well an organism can survive and reproduce in an environment |
| Natural Selection | process by which organisms that are most suited for their environment survive and reproduce most successfully; also known as survival of the fittest |
| Homologous Structures | structures that are similar in different species of common ancestry |
| Analogous Structures | body parts that share a common purpose, but not structure |
| Vestigial Structures | structure that is inherited from ancestors but has lost much or all of its function |
| Gene Pool | all the genes, including all the different alleles for each gene, that are present in a population at any one time |
| Species | a group of similar organisms that can breed and produc3 fertile offspring |
| Speciation | formation of a new species |
| Patterns of evolution | theory developed to explain why animals change |
| Coevolution | process by which two species evolve in response to each other |
| Convergent | unrelated organisms evolve together |
| Adaptive | heritable characteristics that increases an organisms chances to survive and reproduce |
| Allele Frequency | number of times that an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene. |
| Single Gene Trait | Trait controlled by one gene that has two alleles |
| Polygenic Trait | Trait controlled by two or more genes |
| Directional Selection | Form of natural selection in which individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve |
| Stabilizing Selection | Form of natural selection in which individuals near the center of a distribution curve have higher fitness than individuals at either end of the curve |
| Disruptive Selection | Natural selection in which individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle of the curve |
| Genetic Drift | Random change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population. |
| Bottle Neck Effect | A change in allele frequency following a dramatic reduction in the size of a population |
| Founder Effect | Change in allele frequencies as a result of the migration of a small subgroup of a population |
| Hardy_Weinberg Principle | Principle that states that allele frequencies in a population remain constant unless one or more factors cause those frequencies to change. |
| Sexual Selection | When individuals select mates based on heritable traits |
| Reproductive Isolation | Separation of a species or population so that they no longer interbreed and evolve into two separate species |
| Behavioral Isolation | Form of reproductive isolation in which two populations develop differences in courtship rituals or other behaviors that prevents them from breeding |
| Geographical Isolation | Form of reproductive isolation in which two populations are separated by geographic barriers such as rivers, mountains, or bodies of water, leading to the formation of two separate subspecies |
| Temporal Isolation | Form of reproductive isolation in which two or more species reproduces at different times |
| DNA | Deoxyribonucleic acid, genetic material that organisms inherit from their parents |
| Nucleotides | submit of which nucleic acid are composed: made up of 5 carbon sugar phosphate group and nitrogenous base |
| 4 nitrogenous bases | Thymine, Cytosine, Adenine, Guanine |
| Where is DNA? | found in the nucleus and mitochondria |
| Shape of DNA | Double Helix, the bases pair together |
| Watson/ Crick | scientists who built the double helix model thanks to Franklin’s x |
| Chargaff | Austrian |
| Franklin | British scientist, used the technique x |
| Telomeres | DNA at the tips of chromosomes |
| DNA vs. RNA | the sugar in RNA is ribose not deoxyribose, RNA is generally single stranded not double stranded, and RNA contains uracil in place of thymine |
| Replication | process of copying DNA prior to cell division |
| MRNA | type of RNA that carries copies of instructions for the assembly of amino acids into proteins from DNA to the rest of the cell |
| Substitution Mutation | in substitute mutation one base is changed to a different base |
| What makes up a cell membrane | Lipids |
| The “p” in pH stands for | Potential |
| “H” in pH stands for | Hydrogen |
| Vasoconstriction | the constriction of blood vessel |
| Vasodilation | the increase in internal diameter of a blood vessel |
| pH scale | Acidic and Basic |
| 0 through 6 pH | Acidic |
| pH 7 | neutral |
| pH 8 through 14 | Basic |
| Ions for pH | Hydrogen for positive, hydroxide for negative |
| Mitosis | a type of cell that results in two daughter cells each the same as the parent nucleus, typical of ordinary tissue growth |
| Meiosis | a type of cell division that results in two daughter cells each with half the chromosome number of the parent cell |
| Cell division | the division of a cell into two daughter cells with the same genetic material |
| Interphase | the resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis |
| Prophase | the first stage of cell division before metaphase, during which the chromosomes become visible as paired chromatids and the nuclear |
| Prophase 1 | the nucleus disappears |
| Prophase 2 | no new chromosomes occur before meiosis |
| Metaphase | chromosomes become attached to spindle fibers |
| Metaphase 1 | the centrioles are at opposite poles of the cell |
| Metaphase 2 | each of the daughter cells completes the formation of a spindle apparatus |
| Anaphase | chromosomes more away from one another to opposite ends of the poles |
| Anaphase 1 | the sister chromatids remain attached to their centromeres and move together toward the poles |
| Anaphase 2 | the two chromatids of each chromosome move to opposite poles on the spindle |
| Telephase | the final phase of cell division between anaphase and telephase in which the chromatids or chromosomes move to opposite ends |
| Telephase 1 | the homologous chromosome pairs complete their migration to the two poles as a result of the action of the spindle |
| Telephase 2 | a nuclear envelope forms around each set of chromosomes |
| Cytokinesis | brings separation into two daughter cells |
| Sexual reproduction | the production of new living organisms by combining genetic information from two individuals of different types |
| Chromosomes | a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the from |
| Genome | Entire set of genetic information that an organism carries in its DNA. |
| Sex Chromosome | One of two chromosomes that determines an individual’s sex. |
| Autosome | – Chromosome that is not a sex chromosome; also called autosomal chromosome. |
| Dominant | When an organism expresses a more powerful gene or allele. |
| Recessive | A gene or allele is one in which the effect is not tangible and is masked by the dominant gene or allele. |
| Phenotype | Physical characteristics of an organism. |
| Genotype | The genetic makeup of an organism. |
| Pedigree A | chart that shows the presence or absence of a trait according to the relationships within a family across several generations. |
| Non | disjunction – Error in meiosis in which the homologous chromosomes fail to separate properly. |
| Cystic Fibrosis | It is an inherited disease that affects the lungs, digestive system, sweat glands, and male fertility. |
| Sex | linked inheritance – A trait that is genetically determined by an allele located on the sex chromosome. |
| Sickle cell anemia | A chronic, usually fatal, disease marked by sickle shaped red blood cells. |
| Huntington disease | A progressive neuro degenerative disease causing uncontrolled physical movements and mental deterioration. |
| Disorders caused by genes | They are caused by changes in the structure or number of chromosomes or in the DNA. |
| Binomial Nomeclature | Classification system in which species are assigned a 2 part scientific name |
| Cladogram | diagram depecting patterns of shared characters among species |
| Domain | larger more inclusive taxonomic category than a kingdom |
| Eukaryote | organism whose cells contain a nucleus |
| Systematics | study of diversity of life and evolutionary relationship between organisms |
| Taxa | group or level of organization into which organisms are classified |
| Phylogeny | evolutionary history of a lineage |
| Prokaryotes | unicellular organisms that lacks a nucleus |
| Genes | sequence of DNA that codes for a protein and determines a trait. |
| Family | group of similar genera |
| Order | Group of closely related families |
| Species | group of organisms that can breed and produce fertile offspring |
| Kingdom | largest and most inclusive group of Linnaean classification |
| Phylum | group of closely related classes |
| Class | group of closely related orders. |
| Photosynthesis Equation | 6 CO2 + 12 H2O + photons → C6H12O6 + 6 O2 + 6 H2O. Words |
| Glycolysis happens | in the cytoplasm of the cells. |
| Glucose | is a simple carbohydrate and is the primary molecular input of cellular respiration. Its main purpose is to create ATP. |
| A consumer | is an organism that generally obtains food by feeding on other organisms or organic matter due to lack of the ability to manufacture own food from inorganic sources; a heterotroph. |
| A producer | is an autotrophic organism capable of producing complex organic compounds from simple inorganic molecules through the process of photosynthesis |
| Krebs cycle | is part of cellular respiration and is the process that creates ATP. |
| Four ATP are produced during Glycolysis, but there is a net gain of only two. | Up to 38 ATP are produced during cellular respiration. |
| The chemical formula of glucose | C6H12O6. |
| Glukus | sweet |
| Nucleus | the center of an atom, which contains the protons and neutrons; in cell, structure that contains the cell’s genetic material in the form of DNA |
| Vacuole | cell organelle that stores materials such as water, salts, proteins, and carbohydrates. |
| Cell Membrane | thin, flexible barrier that surrounds all cells; regulates what enter and leaves the cell |
| Centrioles | structure in an animal cell that helps to organize cell division |
| Ribosome | cell organelle consisting of RNA and protein found throughout the cytoplasm in a cell; the sire of protein synthesis |
| Golgi body/ Golgi apparatus | organelle in cells that modifies, sorts, and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell |
| Chromosome | threadlike structure of DNA and protein that contains genetic information; in eukaryotes, chromosomes are found in the nucleus; in prokaryotes, they are found in the cytoplasm. |
| Endoplasmic Reticulum | The endoplasmic reticulum is where lipid components of the cell membrane are assembled. Along with proteins and other materials that are exported from the cell. |
| Cytoplasm | in eukaryotic cells, all cellular contents outside the nucleus; in prokaryotic cells, all of the cells contents |
| Mitochondria | cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use. |
| Chloroplasts | organelle found in cells of plans and some other organisms that captures the energy from sunlight and concerts it into chemical energy |
| Fertilization | the union of male and female gametic nuclei |
| Allele | any of several forms of a gene, usually arising through mutation that is responsible for hereditary variation. |
| Trait | a distinguishing characteristic or quality, especially of one's personal nature |
| Genes | the basic physical unit of heredity; a linear sequence of nucleotides along a segment of DNA that provides the coded instructions for synthesis of RNA, which, when translated into protein, leads to the expression of hereditary character. |
| Gametes | a mature sexual reproductive cell, as a sperm or egg, that unites with another cell to form a new organism. |
| Probability | a strong likelihood or chance of something |
| Punnett Square | a type of grid used to show the gametes of each parent and their possible offspring; a type of grid that can indicate all the possible outcomes of a genetic cross |
| Incomplete | not complete; lacking some part |
| Dominance | rule; control; authority; ascendancy |
| Co | dominance |
| Multiple Alleles | a series of three or more alternative or allelic forms of a gene, only two of which can exist in any normal, diploid individual |
| Polygenic Traits | A trait that is controlled by a group of no allelic genes |
| Homologous | having the same or a similar relation; corresponding, as in relative position or structure |
| Diploid | having two similar complements of chromosomes |
| Haploid | an organism or cell having only one complete set of chromosomes, ordinarily half the normal diploid number |
| Frame Shift Mutation | Mutation that shifts the “reading frame” of the genetic message by inserting or deleting a nucleotide. |
| Deletion/Insertion | means the same as Frame Shift Mutation. |
| Point Mutation | Gene mutations that involve changes in one or a few nucleotides. |
| Hydrogen Bonding | The bonding that holds DNA bases. |
| messenger RNA | Convey genetic information from DNA to the ribosomes. |
| transfer RNA | Decodes messenger RNA |
| Pigments | light absorbing molecule used by plants to gather the suns energy |
| Photosynthetic organisms capture energy from? | sunlight with pigments |
| Chlorophyll | principal pigment of plants and other photosynthetic organisms |
| Thylakoids | saclike photosynthetic membranes found in chloroplast |
| Stroma | fluid portion of the chloroplast outside the thylakoids |
| An electron carrier is a? | compound that can accept a pair of high energy electrons and transfer them, along with most of their energy, to another molecule |
| NADP+ | carrier molecule that transfers high energy electrons form chlorophyll to other molecule |
| Photosynthesis uses the energy of? | sunlight to convert water and carbon dioxide into high energy sugars and oxygen |
| Light dependent reactions | a set of reactions in photosynthesis that carry energy from light to produce ATP and NADPH |
| Light independent reactions | a set of reactions in photosynthesis that do not require light; energy from ATP and NADPH is used to build high energy compounds such as sugar also known as the Calvin Cycle. |
| Robert Hooke | used an early compound microscope to discover tiny chambers he soon named cells. |
| Leeuwenhoek | used single lens microscope to observe and identified bacteria. |
| Cells | basic units of life. |
| Schleiden c | oncluded that all plants are made of cells. |
| Schwann | concluded all animals are made of cells. |
| Virchow | concluded that new cells can be produced only from the division of existing cells. |
| Cell theory | fundamental concept of biology that states all living things are made up of cells, cells are basic units of structure and function in living things, and new cells are produced from existing cells. |
| What’s the difference between Eukaryotes and Prokaryotes? | prokaryotes do not separate their genetic material within the nucleus and are less complex, while in eukaryotes the nucleus separates the genetic material from the rest of the cell. |
| What is the role of the chromosomes in cell division? | Cells must first make a copy of their genetic information before cell division takes place. |
| Cell Cycle | Series of events in which a cell grows, prepares for division, and divides to form two daughter cells. |
| What are the main events of the cell cycle? | During the cell cycle, a cell grows, prepares for division, and divides to form two daughter cells. |
| Prokaryotic Cell Cycle | Regular pattern of growth, DNA replication and cell division that can take place very rapidly under ideal conditions. The process of cell division in prokaryotes is a form of asexual reproduction known as binary fisson. |
| Eukaryotic Cell Cycle | Consists of 4 Phases: G1, S, G2, and M |
| Interphase | period of the cell cycle between cell divisions |
| G1 Phase (Cell Growth) | Cells do most of their growing, increasing in size, and synthesizing new proteins and organelles. |
| S Phase (DNA Replication) | New DNA is synthesized when chromosomes are replicated containing twice as much DNA than in the beginning. |
| G2 Phase (Preparing for Cell Division) | Shortest of the three phases of interphase, when many of the organelles and molecules required for cell division are produced. |
| M Phase (Cell Division) | When two daughter cells are produced |
| Cytokinesis | division of the cytoplasm to from two separate daughter cells |
| Centromere | Region of a chromosome where the two sister chromatids attach |
| What do light dependent reactions from? | oxygen and carriers of ATP and NADPH. |
| What happens in the light independent? | During the light independent reactions ATP and NADPH that form the light Dependent reaction are used to Produce High energy sugar. |
| What are the most important factors that affect photosynthesis? | They are temperature, light intensity, and the availability of water. |
| Can Photosynthesis stop entirely? | Photosynthesis can stop entirely if low temperature. |
| Why are most plants green? | The green color of most plants is caused by the reflection of green light by the pigment chlorophyll, pigments capture light dependent reactions of Photosynthesis. |
| True/False Some alleles are neither dominant nor recessive? | True |
| What does polygenic mean? | “many genes” |
| Does the environment have a role in how genes determine traits? | Environmental conditions can affect gene expression and influence genetically determined traits |
| RNA | Involved in putting DNA into action, it stands for Ribonucleic acid |
| Messenger RNA | It carries information from one part of the cell to the other parts |
| Ribosomal RNA | proteins that make up subunits of a cell |
| Transfer RNA | when a protein is built a transfer RNA moves the amino acid to the ribosomes |
| Transcription | segments of DNA that serve as templates to produce RNA molecules |
| RNA polymerase | an enzyme that transcription requires |
| Introns | portions of DNA that are cut out and not used |
| Exons | The remaining pieces of DNA after introns are taken out |
| Genetics | The scientific study of heredity |
| Fertilization | The process that produces a new cell |
| Trait | A specific characteristic of an individual |
| Hybrids | The offspring of crosses between parents with different traits |
| Genes | Factors that are passed from parent to offspring |
| Alleles | The different forms of a gene |
| Principle of Dominance | A principle that states that some alleles are dominant and others are recessive |
| Segregation | The separation of alleles during gamete formation |
| Gametes | A sex cell |
| Heredity | The delivery of characteristics from parent to offspring |
| Who founded the modern science of genetics? | Gregor Mendel |
| What is the males reproductive cell called? | Sperm |
| What is the females reproductive cell called? | Egg |
| True/False Many traits vary from one individual to another | True |
| What is a true breeding plant? | A plant that produces identical offspring |
| Cross pollination | take the sperm from one plant and put it onto the egg of another plant |
| Where does an organism get its unique characteristics? | It inherits them from its parents |
| How are different forms of a gene distributed to offspring? | During gamete formation the alleles for each gene segregate from each other so that each gamete carries only one allele for each gene |
| Polypeptide | long chain of amino acids that make proteins |
| Genetic code | collection of codons of MRNA each of which directs the incorporation of a particular amino acid |
| Codon | group of three nucleotides basis in MRNA that specify particular amino acid to be inquorate into protein. |
| Translation | synthesis of an RNA molecule from a DNA template. |
| Anticodon | group of three bases on a RNA molecule that are complementary to the three bases of codons of MRNA. |
| Gene expression | process which a gene produces its products and the product carry out its function. |
| What is the genetic code and how is it read? | the genetic code is read three reasoned to a single amino acid |
| What role dose the ribosome play in assembling proteins? | ribosomes use the sequence of codons in MRNA to assemble amino acid in polypeptides chains |
| What is AUG AAC UCU? | a codon is a group of three nucleotides bases in messenger RNA that specifies a particular amino acids |
| What are the chemical components of DNA? | Deoxyribonucleic acid |
| What is the meaning of base pairing? | Principle that bonds in DNA |
| What does helix mean? | Extended spiral chain of units in a protein |
| Who was a British scientist in the 1950s? | Rosalind Franklin |
| What does the double helix model tell us about DNA? | Double helix model explains Chargaff’s rule of base pairing and how the two strands of DNA are held together |
| Base pairing | A pairs with T, G pairs with C |
| Selective Breeding | Allowing only those animals with wanted characteristics to produce the next generation |
| Hybridization | Crossing dissimilar individuals to bring together the best of both organisms |
| Inbreeding | Continued breeding of individuals with similar characteristics |
| Biotechnology | Application of a technological process, invention, or method to living organisms |
| Polyploidy | Polyploidy plants and animals have many sets of chromosomes |
| Mutation | Heritable change in DNA |
| What did Charles Darwin suggest about the world and organisms? | He suggested that the world was very old and organisms could evolve or change over time |
| Evolution | the change over time of organisms |
| What did Darwin suggest about animals of the same species? | He suggested that they could be very different depending on their environment |
| What did Darwin notice about same species living in the same area? | He noticed that they could be very different depending on their habitats |
| How did Darwin connect fossils with present day animals? | They are all similar |
| What does evidence suggest about species? | Evidence suggests that species are not fixed and they can change at any time by natural processes |
| Fossils | preserved remains or traces of ancient animals |
| Canopy | Tall trees from a dense, leafy covering. |
| Understory | In the shade below the canopy shorter trees and vines form a layer. |
| Deciduous | A plant that sheds its leaves during a particular season. |
| Coniferous | Trees or conifers, produce seed |
| Taiga | Dense forest of coniferous evergreens along the northern edge of the temperate zone. |
| Permafrost | A layer of permanently frozen sub soil. |
| What abiotic and biotic factors characters biomes? | Biomes are described in terms of abiotic factors like climate and soil type, and biotic factors like plant and animal life. |
| Demography | Scientific study of human populations |
| Thomas Malthus | English economist who suggested that the limiting factors of human populations were war, famine, and disease. His ideas later influenced the opinions of Charles Darwin |
| Demographic transition | Dramatic change from high birthrates/death rates to low birthrates/death rates |
| Age structure | Comparisons between the populations of each age |
| How has human population size changed over time? | The human population, like populations of other organisms, tends to increase. The rate of that increase has changed dramatically over time. |
| Why do population growth rates differ among countries? | Birthrates, death rates, and the age structure of a population help predict why some countries have high growth rates while other countries grow more slowly. |
| Ecological succession | a series of more or less predictable changes that occur in a community over time |
| Ecosystems changer over time especially after disturbances as some die out and…? | New species move in |
| Primary succession | succession that begins in an area with no remnants of an older community. |
| Pioneer species | first species to populate an area during succession |
| Ecological succession | involves changes that occur one after the other as species move into and out of a community |
| Secondary succession | when disturbance affects the community with out completely destroying it. |
| One species alters its environment other species find it easier to complete for? | Resources |
| In _________ succession healthy ecosystems follow natural disturbances that often reproduce the original climax community? | Secondary |
| ________ may or may not recover from extensive human caused disturbances? | Ecosystems |
| Weather | The day to day condition of earth’s atmosphere |
| Climate | Average conditions over long periods |
| Microclimates | Environmental conditions can very over small distances |
| Greenhouse effect | Allows visible light to enter but traps heat |
| What is the regions climate defined by? | It is defined by the year to year patterns of temperature and precipitation. |
| What factors determine global climate? | Global climate is shaped by many factors, including solar energy trapped in the biosphere, latitude, and the transport of heat by winds and ocean currents. |
| Embryo is | developing stage of a multicellular organism |
| Specialized plant cells are cells that | store sugar, transport materials and carry out photosynthesis |
| Differentiation is | process by which cells become specialized |
| The process of differentiation determines | cells identity |
| Totipotent cells | cells able to develop into any type of cell found in the body |
| Blastocyst | hollow ball of cells with a cluster of cells inside |
| What is the difference between outer cells and inner cells | outer cells form a tissue that attaches the embryo to its mother. Inner cell mass becomes the embryo itself |
| Pluripotent cells | cells that can develop into most but not all of the body’s cell types |
| The unspecialized cells from which differentiated cells develop are known as | stem cells |
| Multipotent cells | cells with limited potential to develop into many types of differentiated cells |
| Stem cells offer the potential benefit of using undifferentiated cells to | repair or replace badly damaged cells and tissues |
| Harvest | is the act or process of gathering |
| Energy is | The ability to do work. |
| Energy comes | In many forms such as: light, heat, and electricity. |
| Adenosine Triphosphate (ATP) | One of the most important compounds that cells use to store and release energy. |
| ATP consists of | Adenine, a 5 carbon sugar called ribose, and three phosphate groups. |
| Adenosine Diphosphate (ADP) | Compound that looks almost like ATP, but has two phosphate groups instead of three, energy can be stored in small amounts by adding phosphate groups to ADP molecules(producing ATP). |
| ATP can easily | Release and store energy by breaking and reforming the bonds between its phosphate group, making it exceptionally useful as a basic energy source for all cells. |
| Difference between ATP and ADP | ATP is better for transferring energy, and ADP can store larger amounts of energy. |
| Heterotrophs | Organisms that obtain food by consuming other living things for energy. |
| Autotrophs | Organisms that make their own food. |
| Photosynthesis | The process by which autotrophs use energy of sunlight to produce high energy carbohydrates (sugars and starches) that can be used as food. |
| In the process of photosynthesis | Plants convert the energy of sunlight into chemical energy stored in the bonds of carbohydrates. |
| Cyclin | one of a family of proteins that regulates the cell cycle in eukaryotic cell |
| Growth factor | one of a group of external regulatory proteins that stimulate the growth and division of cells |
| Cancer | disorder in which some of the body’s cells lose the ability to control growth |
| Tumor | mass of rapidly dividing cells that can damage surrounding tissue |
| Regulate | to control or direct |
| What is the problem with cancer cells? | Cancer cells do not respond to the signals that regulate the growth of most cells |
| What causes cancer? | cancers are caused by defects in gene that regulate cell growth and division |
| What is the passive transport? | Every living cell exists in a liquid environment. Most important functions of the cell membrane is to keep the cells internal conditions relatively constant, it does this by regulating the movement of molecules from one side of the membrane to the other. |
| What does cellular cytoplasm consists of? | Many different substances dissolved in water. In any solution, solute particles move constantly. They collide with one another and tend to move from an area where they are more concentrated to an area where they are less concentrated. |
| Diffusion | Is the process by which particles move from an area of high concentration to an area of lower concentration |
| What is diffusion? | It’s the driving force behind the movement of many substances across the cell membrane. |
| Passive transport | Is the movement of materials across the cell membrane without using cellular energy. |
| What does diffusion depend on? | It depends on random particles. Therefore substances diffuse across membranes without requiring the cell to use additional energy. |
| Facilitated diffusion | Is the process in which molecules that cannot directly diffuse across the membrane pass through special protein channels. |
| Aquaporins | Water channel protein in a cell. |
| Osmosis | Is the diffusion of water through a selectively permeable membrane. |
| Isotonic | When the concentration of two solutions is the same. |
| Hypertonic | When comparing two solutions, the solution with the greater concentration solutes. |
| Osmotic pressure | Pressure that must be applied to prevent osmotic movement across a selectively permeable membrane. |
| What is active transport? | The movement of materials against a concentration difference. |
| Active transport | Requires energy. |
| Endocytosis | Is the process of taking material into the cell by means of infoldings or packets of the cell membrane. |
| Phagocytosis | is a type of endocytosis in which extensions of cytoplasm surround a particle and package it within a food vacuole. |
| What are two reasons why cells divide rather than continuing to grow? | The larger a cell becomes the more demands the cell places on its DNA and a larger cell is less efficient in moving nutrients and waste materials across the cell membrane. |
| Where do living cells store critical information? | In a molecule known as DNA. |
| What is used for cell growth? | The information is used to build molecules needed for cell growth. |
| Why are cells like towns? | If the cell or “town” gets too large it would more difficult to get sufficient amounts of oxygen and nutrients in and waste products. |
| What depends on cells volume? | The rate at which food and oxygen are used up and waste products are produced depends on the cells volume. |
| What depends on surface area? | The rate at which the exchange takes place depends on the surface on the cell which is the total area of the cell membrane. |
| What is cell division? | The process by which a cell divides into two new daughter cells. |
| What happens before cell division occurs? | The cell replicates |
| The production of genetically of genetically identical offspring from a single parent is known as what? | Asexual reproduction |
| Asexual reproduction also occurs in what kind of organisms? | Multicellular organisms |
| What is sexual reproduction? | A type of reproduction in which cells form from two parents. Two parents unite to form the first cell of a new organism. |
| How do plants reproduce? | Asexually |
| What is a survival strategy for single celled organisms? | Asexual Reproduction |
| What is a disadvantage? | Lack of Genetic Diversity |
| What is a different strategy? | Sexual Reproduction, it requires a mate which provides the genetic diversity. |
| Which organisms reproduce both sexually and asexually? | Yeast |
| What is cytoplasm? | Portion of the cell outside the nucleus. |
| What are organelles? | Specialized organs, “little organs” |
| What is a vacuole? | Large, saclike, membrane |
| What are lysosomes? | Small organelles filled with enzymes |
| What is a cytoskeleton? | A network of protein filaments |
| What are microfilaments? | Threadlike structures made up of a protein. |
| What are microtubules? | Hollow structures made up of proteins known as tubulins. |
| What is a centriole? | Located near the nucleus and help organize cell division. |
| What are ribosomes? | Small particles of RNA and protein found throughout the cytoplasm in all cells. |
| What is an Endoplasmic Reticulum? | ER, Internal membrane system |
| What are Golgi apparatus’s? | Proteins produced in the rough ER move next into an organelle |
| What are chloroplasts? | biological equivalents of solar power plants, chloroplasts capture the energy from sunlight and convert it into food that contains chemical energy in a process called photosynthesis. |
| What are mitochondria? | power plants of the cell |
| What is a cell wall? | strong supporting layer around the membrane |
| What is the Lipid bilayer? | gives cell membranes a flexible structure that forms a strong barrier between the cell and its surroundings. |
| What is selectively permeable? | substances can pass across them and others cannot. |
| Differentiation | becoming specialized in structure and function |
| Homeotic genes | regulates organs that develop in specific parts of the body |
| Hox genes | in flies, a group of homeobox genes |
| What do DNA Binding protein in prokaryotes? | regulate genes by controlling transcription |
| What do you get by binding DNA sequences in the regulatory regions of eukaryotic genes? | transcription factors control the expression of those genes |
| Master control genes are like what? | switches that trigger particular patterns of development and differentiation in cells and tissue |
| Homologous | each set of chromosomes from the male parent has a corresponding chromosome from the female parent |
| Meiosis | process in which the number of chromosomes in per cell is cut in half through the separation of homologous chromosomes in a diploid cell |
| Tetrad | four chromatids |
| Crossing over | when homologous chromosomes form tetrads |
| Zygote | a fertilized egg |
| The diploid cell of most adult organisms contain | two complete sets of inherited chromosomes and two complete sets of genes |
| Watson and crick | discovered the structure of DNA. |
| Base pairing | Base pairing in the double helix explains how DNA can be copied or replicated, because each base on one strand pairs with one base on the opposite strand. |
| Replication | Before a cell divides it duplicates it’s DNA in a copying process. This process which occurs during late interphase of the cell cycle, ensures that each resulting cell has the same complete set of DNA molecules. |
| Bases | If the base on the old strand is adenine, the thymine is added to the newly formed strand. |
| DNA replication | DNA is carried out by a series of enzymes. first unzip a molecule by breaking the hydrogen bonds between base pairs and unwinding the two strands of the molecules. Each strand then serves as a template for the attachment of complementary bases. |
| Replication | Process of copying DNA prior to cell division. |
| DNA Polymerase | Enzyme that joins individual’s nucleotides to produce a new strand of DNA. |
| Telomeres | Repetitive DNA at the end of a eukaryotic chromosome. |
| Rapidly dividing cells | In rapidly dividing cells, such as stem cells and embryotic cells, telomerase helps prevent genes from being damaged or lost during replication. |
| Replication in living cells | Eukaryotic chromosome consist of DNA, tightly packed together with proteins to form a substance called chromatin. DNA and histons molecules form a beadlike structure called nucleosomes. |
| Eukaryotic DNA replication | in eukaryotic cells, replication may begin at dozens or even hundreds of places on the DNA molecule, proceeding in both directions until each chromosome are completely copied. |
| Probability | likelihood that a particular event will occur. |
| Homozygous | organisms that have two identical alleles for a particular gene. |
| Heterozygous | organisms that have two different alleles for the same gene. |
| What are three different genotypes? | TT (pure dominant, homozygous), Tt (heterozygous), tt (pure recessive, homozygous). |
| Punnett Square | use mathematical probability to help predict genotype and phenotype combinations in genetic crosses. |
| Independent Assortment | genes for different traits can segregate independently during the formation of gametes. |
| Mutations | when cells make mistakes in copying their own DNA, inserting the wrong base or even skipping a base as a strand; variations |
| What are the categories of mutations? | gene mutations: changes in a single gene. Chromosomal mutations: changes in whole chromosomes. |
| Point Mutations | gene mutations that involve changes in one or a few nucleotides; they occur at a single point in the DNA sequence. |
| Types of point mutations | substitutions, insertions, deletions; occur during replication. |
| Substitution | when one base is changed to a different base. |
| Insertions | when one base is inserted into the DNA sequence. |
| Deletions | when one base is removed from the DNA sequence. |
| Genetic Code | read three bases at a time. |
| Frameshift Mutations | shift the “reading frame” of the genetic message; another name for insertions and deletions. |
| Types of chromosomal mutations | deletion, duplication, and translocation. |
| Genetic Material | can be altered by natural events or artificial means. |
| Mutagens | chemical or physical agents in the environment. |
| Chemical Mutagens | pesticides. |
| Physical Mutagens | electromagnetic radiation. |
| Polyploidy | the condition in which an organism has extra sets of chromosomes. |
| Griffith Injected mice w/ bacteria. | Found that separately,neither heat killed,disease causing,or harmless bacteria killed mice, but 2 strains mixed together (harmless+heat killed) did. Inferred that genetic info can be transferred from 1 bacteria strain to another |
| Transformation (Griffith’s experiment) | one type of bacteria changes permanently into another |
| Who inferred that genetic information could be transferred from one bacteria strain to another? | Griffith |
| Avery | After experiments, discovered DNA is transforming factor, and stores and transmits genetic information from one generation to the next. |
| Who, by observing bacterial transformation, discovered that DNA stores and transmits genetic information from one generation of bacteria to the next? | Avery |
| Bacteriophage (Avery’s experiment) | a kind of virus that infects bacteria |
| Hershey and Chase | Confirmed Griffith’s experiments. Concluded that genetic material is made up of DNA by studying bacteriophages |
| Who confirmed that DNA was the genetic material found in not just viruses and bacteria, but all living cells? | Hershey and Chase |
| What is DNA’s job? | to store information |
| What is the role DNA in heredity? | to store, copy, and transmit the genetic information in a cell |
| Adaptation | A heritable change to strike in your environment |
| Fitness | Describe how well an animal can survive and reproduce |
| Natural Selection | Animals most suited to its environment will survive and reproduce |
| How are species that are similar but unrelated formed? | They are formed by they both adapt to survive in the same environment. |
| What was Darwin’s main line of work? | Natural selection |
| What book did Darwin publish in 1859? | On the Origin of Species |
| Genome | is the full set of genetic information that an organism carries in its DNA |
| Karyotype | A Karyotype shows the complete diploid set of chromosomes grouped together in pairs arranged in order of decreasing size |
| Sex chromosomes | two of 46 chromosomes in the human genome |
| Autosomes | 44 of the human chromosomes |
| Sex linked gene | is a gene located on a sex chromosomes |
| Pedigree | analyze the pattern of inheritance fallowed by a particular trait |
| Xx represents what gender? | female |
| Xy represents what gender? | male |
| Gel electrophoresis | technique used to separate and analyze DNA fragments |
| Bioinformatics | application of mathematics and computer science to store, retrieve, and analyze biological data |
| Genomics | study of whole genomes, including genes and their functions |
| By using tools that cut, separate, and then replicate DNA base by base scientists can now what? | Read the bas sequences and DNA from any cell. |
| DNA fragments are put in wells in gel, then? | Electric voltage moves them across the gel. |
| Which moves faster, shorter or longer fragments? | Shorter |
| After an hour or two, the fragments separate and appear as what on the gel? | A band |
| Single stranded DNA fragments are placed in the test tube containing DNA polymerase along with the four bases. What is added to some base, which causes synthesis in that strand to stop? | Chemical dye |
| What were the goals of the Human Genome Project, and what has been learned so far from it? | The Human Genome Project was a thirteen year International effort, with the main goals of sequencing all 3 billion base pairs of human DNA and identifying all human genes |
| How does the huge amounts of human DNA become sequenced quickly? | Researchers must break up the whole genome into manageable pieces to determine the base sequences in widely separated regions of DNA strand to use as markers. The markers allow scientiest to locate and return to specific locations in the DNA |
| Nondisjunction | which means not coming apart |
| How does small changes in DNA molecules affect human traits? | Changes in a gene’s DNA sequence can change proteins by altering their amino acid sequences which may directly affect one’s phenotype |
| What is sickle cell disease? | Sickle cell disease is caused by a defective allele for beta |
| What is cystic fibrosis Caused by? | CF is most common among people of European ancestry. It’s caused by a genetic change almost as small as the earwax allele |
| What is Huntington’s disease is caused by? | Huntington’s disease is caused by a dominant allele for a protein found in the brain cells. |
| What is the effect of errors in meiosis? | If nondisjunction occurs during meiosis gametes with an abnormal number of chromosomes may result, leading to a disorder of chromosome numbers. |
| Gene Therapy | The process of changing a gene to treat a medical disease or disorder |
| DNA fingerprinting | Analyzes sections of DNA that may have little or no function but that vary widely from one individual to another |
| Forensics | The scientific study of crime scene evidence |
| Genetic modification could lead to better, less expensive and more nutritious food as well as less | harmful manufacturing processes. |
| Recombinant | DNA technology is the source of some of the most important and exciting advances in the prevention and treatment of disease. |
| What is the definition of biosphere? | consists of all life on earth and all the parts of earth in which life exists, including land, water, and atmosphere. |
| What is a specie? | a group of similar organisms that can breed and produce fertile offspring. |
| What is a population? | a group of individuals that belong to the same species and live in the same area. |
| What is a community? | an assemblage of different populations that live together in a defined area. |
| What is ecosystem? | all organisms that live together with their physical environment. |
| What is a biome? | a group of ecosystems that share similar climates and typical environments. |
| What’s the study of ecology? | it is the scientific study of interactions among organisms and between organisms and their physical environment. |
| What was the scientific study Lewis Thomas studied? | Thomas studied ecology. |
| What is a biotic factor? | any organism that is alive in an environment. |
| What is abiotic factors? | anything not alive such as water, sunlight, humidity, soil type, etc.… |
| Can biotic and abiotic factors live together in the same environment together? | yes |
| Molecular clock | Compares stretches of DNA to mark the passage of evolutionary time. |
| What was Darwin’s hunch about the growth of embryos? | It could transform adult body shape and size. |
| Where do new genes come from? | One way in which new genes evolve is through the duplication, and then modification, of existing genes. |
| Extinct | Something that has died out |
| Paleontologist | Researcher who studies fossils to learn about ancient life. |
| Relative Dating | Places rock layers and fossils in a temporal sequence. |
| Geological Time Scale | Timeline of Earth’s history. |
| Eons are divided into _________? | Eras |
| Eras are subdivided into _________? | Periods |
| What is Plate Tectonics? | A theory that explains movements as the result of solid “plates”, moving slowly over Earth’s mantle. |
| How Does natural selection effect single gene and polygenic traits? | natural selection on single gene traits can lead to changes in allele frequencies natural selection in polygenic traits can affect the elective fitness |
| What conditions are required to maintain a genetic equilibrium? | these things cannot occur (1)nonrandom mating (2)small population (3)immigration (4)mutations (5)natural selection |
| Genetic equilibrium | allele frequencies in a gene pool don’t change |
| Hardy Weinberg principle | states that allele frequencies in a population should remain constant |
| Sexual selection | individuals select mates based on heritable traits, such as size, strength, or coloration |
| Gene pool | consists of all the genes, including all of the different alleles for reach gene that are present in a population. |
| Allele Frequency | the number of times an allele occurs in a gene pool compared to the total number of alleles in that pool for the same gene |
| Single gene trait | a traits controlled by only one gene |
| Polygenic traits | many traits controlled by two or more genes |
| What is a change in the frequency of alleles in a population over time? | evolution |
| Three sources of genetic variation are? | Mutation, genetic recombination during sexual reproduction and lateral gene transfer |
| What is lateral gene transfer? | eukaryotic organisms, genes are passed are passed only from parents to off spring during sexual or asexual repo |
| Food chain | series of steps in an ecosystem in which organisms transfer energy by eating and being eaten |
| Phytoplankton | photosynthetic algae found near the surface of the ocean |
| Food web | network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem |
| Zooplankton | small, free, floating animals that form part of a plankton. |
| Trophic level | each step in a food chain or food web |
| Ecological pyramid | illustration of the relative amounts of energy or matter contained within each trophic level in a given food chain or food web |
| Bio mass | total amount of living tissue within a given trophic level |
| What flows through an ecosystem in a one way stream, from primary producers to various consumers? | Energy |
| What shows the relative amount of energy available at each trophic level of a food chain or a food web? | Pyramids of energy |
| A__________Illustrates the relative amount of living organic matter available at each trophic level? | pyramid of biomass |
| A__________shows the relative number of individual organisms at each trophic level of organisms? | Pyramid of numbers |
| What is dentrification? | The process by which bacteria converts nitrates into nitrogen gas. |
| What is a limiting nutrient? | A single essential nutrient that limits productivity in an ecosystem. |
| Phosphorous is important because? | This element is used in our bodies for the production of DNA and RNA. |
| Does Phosphorous enter the atmosphere in significant amounts? | No |
| If a farmer plants corn two years in a row will wheat grow in that field well and why? | No because the amounts of nutrients in the soil is limiting the growth of the plants |
| Living organisms are composed of what four main elements? | Oxygen, carbon, hydrogen, and nitrogen |
| Unlike the one way flow of energy, matter is ___________within and between the ecosystems. | Recycled |
| Oxygen gas in the atmosphere is released by __________? | is released by the photosynthesis |
| __________ is the major component of all organism compounds? | Carbon |
| Homeostasis | relatively constant internal physical and Chomical conditions that organisms maintain |
| Tissue | a group of similar cells that preforms a particular function |
| Organ | group of tissues that work together to perform closely related functions |
| Organ system | group of organs that work together to perform a specific function |
| Receptor | to which the signaling molecule can bind |
| To maintain homeostasis unicellular organism must do what? | grow, respond to the environment, transform energy and reproduce. |
| How do the cells of multicellular organisms work together to maintain homeostasis? | the cells of multicellular organisms become specialized for particular tasks and communicate with one to maintain homeostasis |
| How do individual cells maintain homeostasis? | to maintain homeostasis, unicellular organisms grows’ respond to the environment, transform energy, and reproduce |
| Limiting factor | A factor that controls the growth of a population |
| What do limiting factors determine? | The carrying capacity of an environment for a species |
| What do density dependent limiting factors include? | Completion, predation, herbivory, parasitism |
| What is a limiting factor? | A factor that controls the growth of a population |
| The ability to survive and reproduce under a range of environmental circumstances is? | Tolerance |
| The general place where an organism lives is? | Habitat |
| True or false, organisms have an upper and lower limit of tolerance for every environmental factor? | True |
| Species tolerance for environmental conditions helps determine its? | Habitat |
| This describes not only what an organism does, but also how it interacts with biotic and abiotic factors in the environment. | Niche |
| The term ______________ can refer to any necessity of life? | Resource |
| Biological _____________ of an organisms niche involve the biotic factor it requires for survival? | Aspects |
| The sunlit region near the surface in which photosynthesis can occur | Photic zone |
| Non sunlit dark region where photosynthesis can’t occur | Aphotic zone |
| Organisms that live on or in rocks and sediments in the bottoms of lakes, streams, and oceans | Benthos |
| General term that includes phytoplankton and zooplankton | Plankton |
| An ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year | Wetland |
| Special type of wetland formed where a river meets a sea | Estuary |
| Are affected primarily by water depth, temperature, flow, and amount of dissolved nutrients | Aquatic Organisms |
| What often varies within depth of water | Temperature |
| Which four substances do organisms need to live | Oxygen, nitrogen, phosphorus, and potassium |
| Only three percent of earth’s surface is covered in what | Fresh water |
| What are the three main categories of fresh water ecosystems | rivers and streams, lakes and ponds, and fresh water wetlands |
| Where do rivers, streams, brooks, and creeks originate | underground |
| What do estuaries serve as that is important to fish and shellfish reproduction | spawning and nursery grounds |
| Ecologists typically divide the ocean into zones based on_______ and ______ from shore | depth and distance |
| Organisms in the intertidal zone are submerged at high tide and exposed to ______ at low tide | Air and sunlight |
| Name the characteristics of coastal ocean | brightly lit and supplied with nutrients from freshwater runoff |
| What two zones can the open ocean be divided into | photic and aphotic |
| Organisms need energy for what? | Growth, Reproduction, and their own metabolic processes |
| If there was no energy there would be? | No life reproduction |
| How do the best known and most common primary producers harness solar energy? | Photosynthesis |
| What do organisms do when they can’t use photosynthesis? | Chemosynthesis |
| Autotrophs | algae, certain bacteria, and plants can capture energy from sunlight or chemicals and convert in to forms things that living cells can use |
| Primary producers | first producers of energy |
| Photosynthesis | capture light and uses it to power chemical reaction that convert carbon dioxide and water into oxygen |
| Chemosynthesis | chemical energy is used to produce carbohydrates |
| Hereotrophs | animals, fungi, and many bacteria cannot directly harness energy from environment as primary producers |
| Consumers | organism that rely only on other organisms for energy and nutrients |
| Species | a population or group of populations whose members can interbreed and produce fertile offspring. |
| Speciation | the formation of a new species. |
| Reproductive isolation | two populations that no longer interbreed. |
| What happens when populations become reproductively isolated | they can evolve into two separate species. |
| Name some ways that reproductive isolation can develop | including behavioral isolation, geographic isolation, and temporal isolation. |
| Behavioral isolation | two populations are capable of interbreeding develop differences in courtship rituals and other behaviors. |
| Geographic isolation | two populations are separated by geographic barriers such as water, mountains, and rivers. |
| Temporal isolation | two or more species that reproduce at different times. |
| How might the founder effect and natural selection have produced reproductive isolation that could have led to speciation among Galapagos finches? | According to this hypothesis, speciation is Galapagos finches occurred by the founding of a new population, geographic isolation, changes in the new populations gene pool, behavioral isolation, and ecological competition. |
| Many years ago a few finches from South America arrived in the Galapagos islands. Because of the founder effect what happen? | allele frequencies of this founding finch population could have differed from allele frequencies in the original South American population. |
| What are examples of changes in finch gene pools | If there was a specific type of nut, then there was a bird that had a specialized beak. |
| Give an example of competition and continued evolution in finches | Based on beak specialization certain subspecies would survive longer than other species. All of the isolations could have produced over 13 different finch species that are around today. |
| What processes influence whether species and clades survive or become extinct? | if the rate of speciation in a clade is equal to or greater than the rate of extinction, the clade will continue to exist and if the rate of extinction in a clade is greater than the rate of speciation the clade will eventually become extinct. |
| How fast does evolution take place? | Evidence shows that evolution has often proceeded at different rates for different organisms at different times over a long history of life on earth. |
| What are two patterns of macroevolution? | Adapted radiation and Convergent evolution. |
| What evolutionary characteristics are typical of coevolving species? | The relationship between two coevolving organisms often becomes so specific that nether organism can survive without the other. |
| Macroevolutionary patterns | the grand transformations in anatomy, phylogeny, ecology, and behavior, which usually takes place in clades larger than a single species. |
| How is mass extinction different from background extinction? | Mass extinction happens in a relatively short period of time and background extinction happens in a slow process. |
| What is the difference between punctuated equilibrium and gradualism? | Punctuated equilibrium is slow and steady but is interrupted while gradualism is slow and steady and isn’t interrupted. |
| What do scientist hypothesize about early earth and the origins of life? | The Earth’s Atmosphere contained little or no origin. |
| Miller and Urey experiment suggested? | how many mixtures of the organic compounds necessary for life |
| What is RNA? | RNA is hypothesis proposes that is existed. |
| What theory explains the origin of eukaryotes cells? | Eukaryotic cells came from prokaryotic cells. |
| What is the evolutionary significance of sexual reproduction? | The development of sexual reproduction speeds up evolutionary. |
| Endosymbiosis Theory | that proposes that eukaryotic cells formed from symbiotic relation among several diff prokaryotic cells. |
| Geographic Range is | the are inhabited by a population. |
| Population density | refers to the number of individuals per unit area. |
| Age structure | the number of males and females of each age a population contains. |
| What can happen when organisms move to a new environments | its population can grow exponentially for a time |
| Exponential growth | is the larger a population gets the faster it grows under ideal conditions with unlimited resources, a population will grow exponentially |
| Immigration | a population may grow if individuals move into its range from elsewhere |
| Emigration | the other hand a population may decrease in size if individuals move off the populations range. |
| Exponential growth | the larger a population gets, the faster it grows. |
| Birthrate and death rate | population can grow if more individuals are born that die in only period of time. |
| What is the difference between immigration and emigration | a population may grow if individuals move into its range. |
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