Brock Biology of Microorganisms 15th Edition Test Bank

Test Bank For Brock Biology of Microorganisms 15th Edition By Michael T. Madigan Brock Biology of Microorganisms, 15e (Madigan et al.) Chapter 1 The Microbial World 1.1 Multiple Choice Questions 1) Which of the following statements is FALSE? A) Microbial cells can exist as single cells. B) Microbial cells carry out their life processes of growth independently. C) Microbial cells include both bacteria and viruses. D) Microbial cells are surrounded by a plasma membrane. 2) Which of the following statements is correct? A) Microorganisms are significant contributors to the total biomass on Earth. B) Microorganisms represent a much smaller amount of Earth’s biomass than plants. C) Microorganisms represent a much smaller amount of Earth’s biomass than animals. D) Microorganisms are significant in number, but not in overall biomass. 3) Differential selection and reproduction of phenotypes occurs during a process called A) cellular differentiation. B) evolution. C) growth. D) transformation. 4) In what/which domain(s) of life is/are microorganisms represented? A) Archaea B) Bacteria C) Eukarya D) Archaea, Bacteria, and Eukarya 5) Biological catalysts involved in the acceleration of the rate of chemical reactions are called A) catalytic converters. B) growth agents. C) evolutionary molecules. D) enzymes. 6) Regarding early life on Earth A) microbial life existed for billions of years before plant and animal life. B) microbial life existed long before animals but has been around for about the same amount of time as plants. C) microbial life, plant life, and animal life all appeared at about the same time. D) it is impossible to determine which type of life first appeared by Madigan