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12. It has been said that bacteria are essential for the existence of life on Ea

ID: 277799 • Letter: 1

Question

12. It has been said that bacteria are essential for the existence of life on Earth. Which of the following would be the essential function served by bacteria? a) Control of insects b) Directly provide food for humans c) Decompose organic material and recycle elements d) Cause disease e) Produce human growth requirements such as insulin Which of the following is not part of a study of microbiology? a) Bacteria b) Fungi c) Viruses d) Insects e) Helminths 13. 14. Use this typical bacterial growth curve to answer questions TIME Which section shows a growth phase where the number of cells dying equals the number of cells dividing? a) A c) C d) D e) A and c Which phase(s) of the graph illustrate(s) a logarithmic change in cell numbers? a) A and C b) B and D 15. c) d) A and B Cand D

Explanation / Answer

12.It has been said that bacteria are essential for the existence of life on Earth. Which of the following would be the essential function served by bacteria?

opt(c) Decompose organic material and recycle material

13.Which of the following is not part of the study of microbiology?

opt(d) Insects

14.which section shows a growth phase where the number of cells dying equals the number of cells dividing?

opt(c) C

15.which sections of the graph illustrate a logarithmic change in cell numbers?

opt(b) B and D