Reference no: EM132598157
1) Why does exposure to UV radiation cause death in vegetative cells but not endospores?
2) Which Bacillus megaterium culture, a culture in the exponential growth phase or a culture in the stationary phase, would show the best survival following exposure to UV radiation?
3) Very briefly, explain the purpose of using selective and/or differential media.
4) Provide one example from real life where you can use a selective and/or differential media.
5) At what point does a physician sends a sick patient's clinical samples to a laboratory to perform the Kirby-Bauer test for antibiotic sensitivity testing.
6) explain what is means for a test to be standardized, for example the Kirby-Bauer test for antibiotic sensitivity testing.
7) What factors influence the size of the zone of inhibition produced by a chemical?
8) How might the physical differences between gram-positive and gram-negative bacteria contribute to differences in chemical resistances?
9) Explain the purpose of using various biochemical tests media.
10) What are certain activities you would perform before you are ready to use biochemical test media?
Osmosis-direction and concentration gradients
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