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28 Cards in this Set
- Front
- Back
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Cell |
the basic unit of life in all living things |
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Tissue |
a group of similar cells that work together to do a job |
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Organ |
a structure made up of a group of tissues that work together to do a certain job |
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Organ System |
group of organs that work together to carry on life functions |
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Organism |
a living thing that carries out basic life functions on its own |
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Population |
a group of organisms of the same species that live together in an area at the same time |
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Community |
all the populations of different species that live together in an area at the same time |
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Ecosystem |
a community of organisms and their nonliving (or abiotic) environment |
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Biosphere |
the part of the Earth where life exists |
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Unicellular |
an organism made of a single cell |
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Bacteria |
extremely small single-celled organisms without a nucleus |
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Ribosomes |
a small organelle in cells where proteins are made |
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Cell membrane |
the outer covering of a cell which lets nutrients in and wastes out |
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Cytoplasm |
the gel-like fluid inside a cell |
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Prokaryotic |
cells that do not have a nucleus |
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Cell wall |
a structure that surrounds the cell membrane in plant cells and provides structure and support |
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Multicellular |
made of many cells |
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Organelles |
structures within a cell |
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Nucleus |
the control center of a cell |
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Eukaryotic |
cells that have a nucleus and many membrane-covered organelles |
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Endoplasmic reticulum |
moves materials around in a cell; can be rough or smooth; "subway system" |
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Mitochondria |
breaks down food and releases energy; the "powerhouse" of the cell |
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Chloropast |
found in plant cells; where photosynthesis occurs |
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Golgi bodies |
packages proteins for movement out of the cell; the "Fed Ex" of the cell |
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Vesicle |
forms when part of the cell membrane surrounds an object and pinches off |
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Vacuole |
stores water and other liquids |
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Lysosome |
digests food, waste & worn out cell parts; "stomach" of the cell |
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Chlorophyll |
green pigment in chloroplasts that absorbs light energy for photosynthesis |
