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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 |