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15 Cards in this Set
- Front
- Back
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virus
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particle that can reproduce only inside the cells of living things
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bacteria
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tiny one-celled organisms, some of which can cause diseases
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cell
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the basic unit of a living thing
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cell membrane
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thin layer that makes up the outside of the cell and controls what enters and leaves it
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nucleus
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the cell part that controls the cell's activities
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cytoplasm
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jellylike material that fills most of a cell
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cell wall
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stiff outer layer that helps keep plant cells firm
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chloroplast
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green cell part in plant cells that traps and uses light energy
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classify
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to arrange in groups using a system
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kingdom
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largest group into which an organism is classified.
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genus
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group of similar species
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species
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group of organisms of only one kind that can interbreed in nature
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invertebrates
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animal that has no backbone
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vertebrate
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animal with a backbone
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mammal
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animal that has hair or fur and feeds its young with milk made by the mother
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