Science Final Exam Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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allele | one of two or more alternate forms of a gene that arises by mutation; found at the same place on the chromosome
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autotroph | an organism that produces its own food such as plants
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base | On a microscope, the bottom. When carrying the microscope, hold the arm and the base.
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cell | the smallest structural and functional unit of an organism
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cell wall | rigid layer or barrier all around a cell
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chloroplast | a part of a plant cell in which photosynthesis take place
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cloning | make an identical copy of something.
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cytoplasm | material inside a cell excluding the nucleus
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density | how solid or compact a substance is
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Periodic table | Organized chart for all elements
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DNA | carrier of gene information on chromosomes
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dominant | characteristics that are inherited from a parent even if only one parent has the allele, the strong one
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genotype | the genetic make up of an organism
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genus | part of the system for sorting living things--genus comes after species and below family
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heterotroph | a organism that consumes or eat their food
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heterozygous | an organism with two different alleles of a particular gene--might have differing offspring
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homozygous | an organism having two identical alleles of a particular gene-
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hybrid | an organism with a mixture of alleles for a gene
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mass | the quantity of matter something contains
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mitrochondria | a rod-shaped structure that produces energy for the cell; mighty mitochondria
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nucleus | a cell structure that contains genetic material; the brains of the cell
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objective lenses | lenses in a microscope which allow magnification of the object
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pedigree | certain genes that the offspring inherits from the parent
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phenotype | the physical trait the gene actually produces
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punnett square | diagram that shows how the genes of two "parents" might possibly combine.
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purebred | certain genes that the offspring inherits from the parent; both phenotypes are the same
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recessive | a gene which has a trait that shows when both parents are recessive.
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responding or dependent variable | a variable in an experiment which is measured or studied.
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revolving nosepiece | the part of the microscope used to change objective (the magnification)
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ribosomes | A small grain-like structure in the cytoplasm were cells are made
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species | a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
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unicellular | one cell, some organisms are unicellular--they consist of one cell.
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vacuole | water sacs in a cell
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volume | A measure of the amount of space or substance an object takes up
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water dispalcement | Technique used to find the volume of an irregularly shaped object
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multicellular | more than one cell
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membrane | A thin line of protection which decides what goes in and out of the cell
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manipulated or independent variable | a variable in an experiment which is intentionally changed by a variable in an experiment which is intentionally changed by
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eyepiece | The part of the microscope where you put your eye
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dichotomous key | a tool used to identify an organism. Helps to sort plants and animals into groups with similar characteristics
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diaphragm | A large dome shaped muscle that plays an important role in breathing
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control | the object that you compare everything else to
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coarse adjustment knob | On a microscope: the knob that makes large adjustments to the focus
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arm | On a microscope: the shaft that attaches the eyepiece body tube revolving nosepiece and objectives to the base
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Objective | On a microscope: the high medium and low objectives can be changed depending on how small or large the object is.
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electrons | atomic particles that produce a negative charge
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neutrons | atomic particles that produce a neutral charge
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symbiosis | a relationship with benefits for two living organisms
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biome | a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.
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length | a measure of how long an object is end-to-end
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temperature | a measure of heat energy an object or substance has
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The scientific method | six steps to recognize and try to solve a problem
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Qualitative Observations | observations using your five senses--color, smell, sounds, feel, taste
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Quantitative Observations | observations about something recorded in numbers such as weight, length, numbers of times something happens
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Inferences | A possible explanation based on observations and prior knowledge
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Hypothesis | an idea or suggested explanation for an observation
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Experimental Design | how the experiment is designed to test a hypothesis
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asexual reproduction | reproduction where one parent produces offspring that are genetically identical
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sexual reproduction | two parent organisms combine genetic material; offspring are genetically different from parents
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growth | process by which an organism grows bigger
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development | process by which an organism become more complex
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homeostasis | ability of an organism to maintain a stable internal environment
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stimulus | a change in the environment that makes an organism react
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response | an organism's reaction to a stimulus
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adaptation | an organism changes to better survive its enviornment
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classification | grouping things with similar characteristics
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taxonomy | studying how things are classified
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kingdoms | In a taxonomy a very general group
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cell wall | Found only in plant cells; a hard layer surrounding the cell membrane of plants
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chlorplast | in plants; captures sun's energy to produce food through photosynthesis
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mitosis | cell division in which one parent cell produces two identical daughter cells
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meiosis | cell division in which one parent cell produce four daughter cells
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mutation | a mistake in a genetic code which can occur during DNA replication
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cancer | caused by a mutation that can lead to uncontrollable division and growth in cells
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semi-permeable | certain substances can pass through the cell membrane
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passive transport | movement of molecules into and out of a semi-permeable cell
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diffusion | molecule move from areas of high concentration to areas of low concentration
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osmosis | the diffusion of water through a cell membrane
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traits | a characteristic that an organism can pass on to its offspring
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biotic factors | all living things in an ecosystem
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abiotic factors | the nonliving things in an ecosystem
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population | all the members of one species that live in a specific area
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community | all the different populations that live in an area
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habitat | the specific place an organism lives
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energy source | the source of all energy inmost food webs is the sun
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producer | an organism that makes its own food (autotroph)
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Consumer | an organism that gets energy from eating other organisms (heterotroph)
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decomposer | an organism that breaks down wastes and dead organisms
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matter | anything that has mass and takes up space
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solid | a state of matter that has a definite shape and definite volume
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liquid | a state of matter that has NO definite shape, but has a definite volume; it cannot be compressed
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gas | a state of matter with no definite shape or volume; it can flow and be compressed
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physical change | a change in a substance that does not alter its identity
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chemical change | a change in which one or more substances combine or break apart to form new substances
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atom | building block of all matter
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element | types of atoms that cannot be broken down into other substances
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compound | made of two or more elements
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molecule | a combination of two or more atoms
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atomic number | the number of protons in the nucleus of an atom; unique to each element
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atomic mass | protons and neutrons which are located in the nucleus of an atom
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period | on the periodic table; a horizontal row of elements; they DO NOT have similar properties
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Group (Family) | On the periodic table; elements in the same column; have similar properties
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metals | most elements are metals; almost all are solid at room temperature (except Mercury)
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metalloids | 7 elements found at the boundary of metals and nonmetals
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Noble Gases | elements with their outer shells filled and DO NOT bond with other atoms
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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