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chapter 7 science vo
vocab
| Term | Definition |
|---|---|
| virus | a tiny nonliving particle that invades and then reproduces inside a living cell |
| host | is a living thing that provides a source of energy for a virus or an organism |
| parasite | organisms that lives on or in a host and causes it harm |
| bacteriophage | viruses that infects bacteria |
| vaccine | a substance introduced into the body to simulate the production of chemicals that destroys specific diasese causing viruses and orgamisms |
| bacteria | are prokaryotes. The material in their cells is not contained in a nucleus. single celled |
| 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 | 2 parents combine their material to produce a new organism |
| conjugation | one bacterium transfers some genetic material to another bacterium through a threadlike bridge |
| endspore | a small rounded thick-walled resting cells that form inside a bacterial cell |
| pasteurization | food is heated to a temp that is high enough to kill most harmful bacteria without changing the taste |
| decomposer | organisms that break down into large chemicals in dead organisms into small chemicals |
| protist | eukaryotes. that cannot be classified as animals, plants, or fungi |
| protozoan | unicellular can be classified into 4 different groups based on the wat they move |
| pesudopod | false foot. form when cytoplasm flows toward 1 location and the rest of the organisms follows |
| contractile valcuole | 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 1 of the species benefit |
| mutualism | close relationship between organisms of 2 species in which both organisms benefit |
| algae | extremly diverse and are autotrophs |
| spore | a tiny cell that is able to grow into new oganisms |
| fungi | eukaryotoes that have cell walls are hetotrophs that feed by absorbing food and use spores to reproduce |
| hyphae | threadlike tubes that make up bodies of multicellular fungi |
| budding | unicellular yeast cells undergo a form of asexual reproduction |
Created by:
caitlin97
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