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7th Chapter 2
Virus and Bacteria
| Term | Definition |
|---|---|
| virus | A tiny, non-living particle that enters and then reproduces inside a living cell. |
| host | An organism the provides a source of energy for a virus or another organism. |
| bacteriophage | A virus that infects a bacteria. |
| parasite | An organism that lives on or in a host and cause it harm. |
| bacteria | A single celled organism that is a prokaryote. (Does NOT have an nucleus) |
| cytoplasm | The region inside the cell membrane and contains a gel like material. |
| ribosome | Circular structures located in the cytoplasm where proteins are produced. |
| flagellum | A long, whip like structure that helps a cell move. |
| respiration | The process of breaking down food to release energy. |
| binary fission | A process in which one cell divides to form two identical cells. A form of asexual reproduction. |
| asexual reproduction | A reproductive process that involves only one parent and produces offspring that are identical to the parent. |
| sexual reproduction | Involves two parents who combine their genetic material to produce a new organism which differs from both parents. |
| conjugation | The process of one bacterium as it transfers some of its genetic material into another bacterium through a thin, threadlike bridge. |
| endospore | A small, rounded, thick-walled, resting cell that forms inside a bacterial cell. |
| pasteurization | The process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food. |
| decomposer | Bacteria that live in soil. These organisms bread down large chemicals in dead organisms into small chemicals. |
| round, bullet shaped, tube shaped, robot-like | What are some shapes of viruses? |