Microbiology: An Introduction
Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 1, Problem 7MCQ

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?

  1. a. control insect populations
  2. b. directly provide food for humans
  3. c. decompose organic material and recycle elements
  4. d. cause disease
  5. e. produce human hormones such as insulin
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