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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 |