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chapter 10 sci note
| Question | Answer |
|---|---|
| what is bacteria? | a single celled organism without a nucleus. |
| binary fission | simple cell division in which one cell splits into two identicle cells. |
| endospore | a small internal resting cell formed by some bacteria when conditions are unfavorable for bacterial growth. |
| consumers | obtain nutrients from other organisms. |
| decomposers | feed on dead organic matter. |
| parasites | invade the body of another organism to obtain food. |
| producers | make their own food. |
| nitrogen bacteria | consume nitrogen in the air and change it into a form that plants can use. |
| decomposing bacteria | break down dead organic matter; therefore, returning nutrients to the soil |
| bioremediation | use of bacteria and other microorganisms to change harmful chemicals into harmless chemicals |
| antibiotics | medicines used to kill bacteria |
| insulin | hormone needed to properly use sugars and other carbohydrates, produced in the pancreas |
| lactic acid bacteria | convert the milk sugar lactose intolactic acid. |
| pathogenic bacteria | prokaryotes that cuase disease |
| viruses | microscopic particles that invade a cell & often kill it |
| lytic cycle | the process by which viruses infect living cells and turn them into virus factories. |
| crystals | polio virus |
| spheres | influenza virus and hiv |
| cylinders | tobacco mosaic virus |
| space craft | bacteriophages |