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Cells & Cell theory
Cells and Cell Theor
| Question | Definition |
|---|---|
| Cell | the smallest part of any living thing |
| cell theory | widely accepted explanation that explains the relationship between cells and living things |
| cell membrane | forms the outer boundary of the cell and allows only certain materials to move into or out of the cell |
| Cytoplasm | a gel-like structure inside the cell; contains water and nutrients for the cell |
| Nucleus | directs the activity of a cell; contains chromosomes with the DNA |
| nuclear membrane | separates the nucleus from the cytoplasm |
| Mitochondria | breaks down food and releases energy to the cell |
| Vacuole | storage areas for the cell |
| cell wall | provides structure to the plant cell |
| Chloroplasts | contain chlorophyll that makes food for the plant cell |
| Autotroph | an organism that can produce its own food using light, water, carbon dioxide, or other chemicals; they are also called producers. |
| vascular plants | plants that have vascular tissue which helps to provide strength and support to the plant |
| nonvascular plants | plants that do not have vascular tissue to help support the plant or transport materials throughout the plant |
| seedless vascular plants | vascular plants which reproduce by making spores |
| tissue | a group of cells working together to perform a similar function |
| organ | a group of tissue working together to perform a similar function |
| organ system | a group of organs working together to perform a similar function |
| organism | a group of organ systems working together to perform a similar function |
| homeostasis | an organism's ability to maintain internal stability to help compensate for changes in the environment; balance or equilibrium in the body |
| heterotroph | an organism that cannot produce its own food, instead gets its food and nutrition from other sources |
| protist | an organism that lives in moist or wet places, can be single-celled organisms or multi-celled organisms |
| single-celled organism | an organism made up of only one cell; also known as unicellular |
| prokaryotic cells | cells that do not have a nucleus or other organelles such as bacteria |
| eukaryotic cells | cells that have a nucleus and other organelles and are surrounded by a cellular membrane |
| binary fission | reproduction where the organism splits into two identical halves |
| Volvox | a single-celled protist that lives in colonies and makes its own food by photosynthesis |
| Euglena | a single-celled protist that contains an eyespot, moves by flagella, and makes its own food by photosynthesis |
| Amoeba | a single-celled protist that lives by ingesting other organisms and moves by using its cytoplasm |
| Paramecium | a single-celled protist that lives by ingesting other organisms and moves by hairlike projections called cilia |
Created by:
MrCscience
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