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Chapter 7 Voc.
| Term | Definition |
|---|---|
| Virus | a tiny, nonliving particle that invades and then multiplies inside a living cell. |
| Host | a living thing that provides a source of energy for a virus or an organism. |
| Parasite | organisms that live on or in a host and cause it harm. |
| Bacteriophage | a virus that infects bacteria. |
| Vaccine | a substance introduced to the body to stimulate the production of chemicals that destroy a specific disease-causing viruses and organisms |
| Bacteria | a single celled organism. |
| flagellum | a long whiplike structure that helps a cell to move. |
| binary fission | in which one cell divides to form two identical cells. |
| asexual reproduction | a reproductive process that involves only one parent and produces offspring that are identical to the parent. |
| sexual reproduction | two parents combined their genetic material to produce a new organism which differs from both parents |
| conjugation | one bacterium transfers some genetic material through a threadlike bridge, |
| endospore | a small, rounded, thick-walled, resting cell that forms inside a bacterial cell. |
| pasteurization | the food is heated to a temperature that is high enough to kill most harmful bacteria |
| decomposer | organisms that break down large chemicals in dead organisms into small chemicals. |
| protist | eukaryotes that cannot be classified as animals, plants, or fungi. |
| protozoan | can be classified as into four groups, based on the way they move and live. |
| pseudopod | temporary bulges of the cell. |
| contractile vacuole | a structure that collects the extra water and then expels it from the cell. |
| cilia | hairlike projections from cells that move with a wavelike motion. |
| symbiosis | a close relationship in which at least one of the species benefits. |
| mutualism | when both partners benefit from living together. |
| algae | plantlike protists |
| spore | a tiny cell that is able to grow into a new organism |
| fungi | eukaryotes that have cell walls, and use spores to reproduce |
| hyphae | branching threadlike tubes that make up that make up the bodies of multicellular fungi |
| fruiting body | fungi that produce spores in reproductive structures |
| budding | unicellular yeast cells that undergo a form of sexual reproduction. |
| lichen | a fungus and either algae or autotrophic bacteria that live together in a mutualistic relationship |
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