Bacteria in the stationary phase have a few phenotypes that are less sensitive to antibiotic targeting the cell wall. which phenotype is the most resistant to antibiotics.
a. persisiter cells
b. endospores
c. viable but non-culturable
d. physical disinfectant
Answer: b. endospores
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Because of the high requirement for reducing power in nitrogen fixation, the nitrogenase enzyme that carries out the reaction is very sensitive to the presence of ________.
A. oxygen B. light C. carbon dioxide D. None of the choices are correct.
Which of the following is an example of direct water usage?
A) agricultural irrigation B) power plant cooling C) steam generation D) home drinking water
Provide a possible explanation for the mechanism that occurs when coastal area freshwater aquifers are overdrawn, resulting in intrusion of salt water into the aquifer
What will be an ideal response?
Which of the following biomes will receive migratory animals, such as caribou, from the tundra?
A. polar ice B. grasslands C. temperate deciduous forest D. coniferous forest E. tropical rain forest