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science ch.2
vocabulary
| Question | Answer |
|---|---|
| virus | A tiny, non-living particel that invades and then reproduces inside a living cell. |
| host | An organism that provides a source of energy or suitable environment for a virus or another organism to live |
| parasite | An organism that lives on or in a host and cause harm to the host |
| bacteriophage | A virus that infects bacteria |
| bacteria | single-celled organism that lack a nucleus |
| cytoplasm | the region of a cell located inside the cell membrane or between the cell membraneand nucleus; contains an gel-like material |
| ribosome | a tiny structure located in the cytoplasm of a cell where protiens are produced |
| flagellum | A long whiplike structure that helps a cell to move |
| respiration | The process of the breaking down food its energy |
| binary fission | a form of asexual reprouduction in which one cell |
| asexual reproduction | a reproductive process involes only one parent and produces offspring that are identical to the parent |
| sexual reproduction | a reproductive process that involes two parents that combine their genetic material to produce a new organism, which differs from both parents |
| conjugation | The process in which a unicellular organism transfers some of its genetic materialto another unicellular organism |
| endospore | a small, rounded, thick-walled, resting cellthat forms inside a bacteria cell |
| pasteurization | a process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the tast of the food |
| decomposer | an organism that breaks down chemicals from dead organisms and returns important materials to the soil and water |
| infectious disease | an illness that can pass from one organism to another |
| toxin | a poison that can harm an organism |
| antibiotic | a chemical that can kill bacteria without harming a person's cell |
| antibiotic resistance | The ability of bacteria to withstand the effects of antibiotic |
| vaccine | a substance introduce into the body to stimulate the production of chemicals that destroy specific disease-causing viruses and organisms |
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aleeza9695
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