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Microbiology
| Question | Answer |
|---|---|
| Lactobacillus (milk) is a form of _____. | Acidophil |
| Acid loving bacteria? | acidophil |
| Bacteria with a Ph. of 5.4 | acidophil |
| Radiation causes? | Mutations |
| radiation affects? | nucleic acids |
| Base loving bacteria such as Vibrio and Cholera? | Alkalinophiles |
| bacteria with a Ph. between 7.0-11.5. | alkalinophiles |
| Neutral loving bacteria with a Ph. between 5.4-8.5. | Neutrophils |
| another word for shrink | hypertonic |
| another word for expand | hypotonic |
| hydrostatic pressure affects? | Membranes & enzymes |
| moisture affects? | metabolism |
| sexual reproduction? | conjugation |
| bacterial reproduction | binary fission |
| y-axis | # of cells |
| x-axis | time |
| exponential growth happens during this phase. | log phase |
| bacteria adjust to the environment during this phase | lag phase |
| 4 phases of cell growth. | 1.lag 2.log 3.stationary 4.death/decline |
| reproduction=death | stationary phase |
| exponential decline occurs during this phase | death/decline phase |
| Ph. affects? | Cell wall |
| temperature affects? | enzymes |
| what cells produce to become resistant to antibiotics. (during conjugation) | plasma |
| cold loving bacteria are called? | psycrophiles |
| psycrophiles like what temperature? | 15-20 degrees C. |
| mesophiles like what temperature? | 25-45 degrees C. |
| heat loving bacteria are called? | thermophiles |
| thermophiles like what temperature? | 50-60 degrees C |
| what does aerobic mean? | needs oxygen |
| what does anaerobic mean? | dislikes oxygen |
| if a bacteria is obligate aerobic, then_____ | it cant live with out oxygen |
| if a bacteria is facultative aerobic then_____ | it prefers to have oxygen, but can live with out it |
| if a bacteria is obligate anaerobic then____ | then it cant live with oxygen |
| if a bacteria is facultative anaerobic then____ | it prefers to live without oxygen, but can live with it |
| encourages growth of some organisms but not others | selective medium |
| changes bacteria, IE: color, Ph. etc. | differential medium |
| special nutrients that allow the growth of a particular organism be in sufficient numbers | enrichment medium |
| streak plate | flame, streak, flame, streak, flame, streak, flame streak |