Microbiology Exam Questions and Answers (Definite Pass)

Microbiology Exam Questions and Answers (Definite Pass) Which of the following is a beneficial activity of microorganisms? A. some microorganisms are used as food for humans B. some microorganisms use carbon dioxide C. some microorganisms provide nitrogen for plant growth D. some microorganisms are used in sewage treatment processes E. all of the above - Answer-E. all of the above Ch 1. It has been said that bacteria are essential for the existence of life on earth. which of the following is the essential function performed by bacteria? A. control insect population B. directly provide food for humans C. decompose organic material and recycle elements D. cause disease E. produce human hormones such as insulin - Answer-C. decompose organic material and recycle elements Ch. 1 Which of the following is an example of bioremediation? A. application of oil-degrading bacteria to an oil spill B. application of bacteria to a crop to prevent frost damage C. fixation of gaseous nitrogen into usable nitrogen D. production by bacteria of a human protein such as interferon E. all of the above - Answer-A. application of oil-degrading bacteria to an oil spill Ch 1.