Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Bio-1st Sem Final
| Question | Answer |
|---|---|
| The 2 sources of truth are: | the Bible and nature |
| A problem solved using the scientific method must be | observed, measured, repeated |
| An example of a problem that can be studied using the scientific method is | Water is mad up of the elements oxygen and hydrogen in a fixed ratio. |
| An example of a hypothesis is | If a tomato has the gene for red pigment, then that tomato will be red. |
| In an experiment, the factor that is changed or manipulated by the scientist is called the | independent variable |
| What is the purpose of a control group in an experiment? | to provide a basis for comparison |
| The factor that is measured and changes as a result of the independent variable is called a | dependent variable |
| What is a constant in an experiment? | a factor that is kept the same. |
| One cow is fed a growth hormone and another cow is not. After a year both cows are weighed. independent variable? dependent variable? | IV: growth hormone DV: weight of the cows |
| Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours. Independent variable? dependent variable? | IV: mosquito repellent DV: number of mosquito bites |
| A thousand papers are stapled with a new stapler and compared to a competitor. The competitor's stapler jammed 3x whereas the new stapler only jammed once. IV? DV? | IV: the new stapler DV: the number of times the stapler jammed. |
| A pediatrician designs baby formula to help babies gain weight. The weight of babies using the formula is compared to the weight of babies not using the formula. IV? DV? | IV: newly designed baby formula DV: weight of the babies |
| Birds have lightweight bones, some are hallow, that allow them to fly. Characteristic of life? | adaptation |
| Many older adults take blood pressure medicine to keep their blood pressure within a normal range. Characteristic of life? | maintains homeostasis |
| Scientists estimate that algae in the ocean produce about 70% of the oxygen in the Earth's atmosphere through photosynthesis. Characteristic of life? | obtain and use energy |
| bacteria populations can double many times in one hour. Characteristics of life? | reproduction |
| Phototropism is a phenomenon that occurs when a plant bends toward the light. Characteristic of life? | responds to stimulus |
| A tadpole, with a strong muscular tail it uses to swim, will one day become a tailless frog. | growth and development |
| Any living thing. | organism |
| protein, carbohydrate, lipid, nucleic acid are all... | biomolecules |
| This molecule is used for long-term energy storage in animals | lipids |
| This molecule is the primary component of muscle tissue | protein |
| This molecule is used to store genetic information | nucleic acid |
| Bone and cartilage are made from this type of tissue | connective tissue |
| Skin and the lining of the digestive tract is made from this type of tissue | epithelial tissue |
| A group of cells that perform a single function | tissue |
| Several types of tissue that work together to perform a single function | organ |
| the esophagus, stomach, small intestine, and large intestine | organ system |
| a small structure within a cell that carries out a specific funtion | organelle |
| Matter is made up of | atoms |
| The subatomic particles found in the nucleus of an atom are | protons and neutrons |
| An atom having a negative or positive charge is called an | ion |
| An atom has 20 protons, 20 neutrons, and 18 electrons, the atom is an | ion |
| The transfer of electrons from one atom to another is an | ionic bond |
| The sharing of electrons between atoms is a | covalent bond |
| If you have a mixture of sugar and water, the sugar is the ____, and the water is the ____. | solute, solvent |
| The ratio of the solute to the solvent is called the ____ of the solution. | concentration |
| The movement of a solute from an area of high concentration to an area of low concentration until equilibrium is achieved is | diffusion |
| The attraction between like molecules is | cohesion |
| An acid has a pH that is | less than 7 |
| Pure water has a pH | equal to 7 |
| The movement of water across a membrane from an area of low solute concentration to an area of high solute concentration is | osmosis |
| The substance known as the universal solvent is | water |
| The positive hydrogen end of a water molecule is attracted to the negative oxygen end of another water molecule. This is a(n): | hydrogen bond |
| A water molecule has a dense region of electrons around the oxygen resulting in a partially negative end and a partially positive end is called | polar |
| requires transport proteins and moves molecules from high concentration to low concentration. | facilitated diffusion |
| Putting too much fertilizer around a rose bush would create a hypertonic solution, and most likely cause water to | move out of the root cells of the rosebush causing it to shrivel and wilt. |
| The use of cellular energy to move particles across a membrane is called | active transport |
| Osmosis is the diffusion of _________ through a _________ membrane. | water; selectively permeable |
| A solution in which the solute concentration is equal to the cytoplasm concentration. | isotonic |
| A solution in which the solute concentration is less than the cytoplasm concentration. | hypotonic |
| A solution in which the solute concentration is greater than the cytoplasm concentration. | hypertonic |
| A biomolecule that lowers activation energy and acts as a catalyst is an | enzyme |
| What type of biomolecule? enzymes | protein |
| What type of biomolecule? DNA and RNA | nucleic acid |
| What type of biomolecule? Major component of the cell membrane | lipid |
| What type of biomolecule? sugar, starch, cellulose | carbohydrate |
| What type of biomolecule? Fats and oils | lipid |
| Subunits made of a sugar, phosphate group, and nitrogen base | nucleic acid |
| What type of biomolecule? amino acid chain folded into a 3-D shape | protein |
| Levels of organization in the correct order | organelle, cell, tissue, organ, organ system |
| Which organelle does an animal cell not have? | cell wall |
| What group is composed of prokaryotic cells? | bacteria |
| Which organelle is not found in ALL cells? | a nucleus |
| A lipid bilayer is the primary component of | the cell membrane |
| Function: Stores DNA; contains all the instructions for the cell Organelle? | nucleus |
| Function: Used for locomotion; found on some bacteria and sperm | flagellum |
| Function: Transports materials in a tubelike system within the cell and aids in protein synthesis | endoplasmic reticulum |
| Function: Transforms energy stored in sugar into usable cellular energy (ATP) | mitochondrion |
| Function: Breaks down ingested substances, old organelles, and invading bacteria | lysosome |
| Function: Controls movement of substances into and out of the cell | cell membrane |
| Contains RNA and site of protein synthesis | ribosome |
| Function: Prepares and packages substances to be secreted by the cell | Golgi apparatus |
| Function: This cell boundary provides rigidity (strength) to the cell | cell wall |
| Function: Converts sunlight into chemical energy in the form of glucose | chloroplast |
| Function: A gel-like substance that contains most organelles | cytoplasm |
| From your study of bacteria, you know that the purpose of mitosis in a unicellular organism is | asexual reproduction |
| Autosomes are chromosomes that | are not sex chromosomes. |
| In humans, one set of chromosomes comes from the father, and a matching set comes from the mother. This results in | 46 chromosomes |
| For a human baby, there are | 22 pairs of autosomes plus an XY chromosome set making the baby a boy. |
| Two genetically identical cells each with its own organelles, cytoplasm, proteins, and diploid set of chromosomes, is the end result of | cytokinesis |
| A single muscle cell can contain dozens of nuclei. Which stage of the cell cycle is the cell not completing? | cytokinesis |
| A section of DNA that codes for a protein is a ____. | gene |
| How many different amino acids are used to make proteins? | 20 |
| Functions: 1. important component of most cell structures; 2. aids in movement of substances in and out of the cell; 3.controls reactions in the cell as an enzyme | proteins |
| In what organelle is RNA produced? | nucleus |
| In what organelle is DNA produced? | nucleus |
| The following strand of DNA is undergoing replication: ATG TAA CGG. What is the sequence of bases that will form as the complementary strand? | TAC ATT GCC |
| A codon is a | triplet of nucleotides on mRNA. |
| DNA replication produces | two identical DNA molecules |
| What is the role of messenger RNA in protein synthesis? | mRNA carries the genetic message from the nucleus to the ribosome. |
| What is the complementary mRNA codon for the DNA sequence CGA TGG? | GCU ACC |
| The subunits (building blocks) of DNA are: | nucleotides |
| During transcription the following is true: | DNA unzips, complementary RNA nucleotides are paired with the DNA, the new RNA detaches and the DNA re-zips. |
| During replication the following is true: | DNA unzips, complementary nucleotides are paired with each side of the DNA ladder, and two DNA molecules are formed. |
| The formation of amino acid chains is called | translation |
| Each mRNA codon codes for an | amino acid |
Created by:
vcanfield
Popular Biology sets