C HAPTER 1: T HE M ICROBIAL W ORLD
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
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
independentl y.
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 significan t 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 no t in overall
biomass.
3. Differential selection and reproduction of phenot ypes 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 catal ysts involved in the acceleration of the rate of chemical
reactions are called
A) catal ytic converters.
B) growth agents.
C) evolutionary molecules.
D) enz ymes.
6. Regarding earl y 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 t ype of life first appeared.
7. The person who described the “wee animalcules” was
A) Robert Hooke.
B) Antoni van Leeuwenhoek.
C) Louis Pasteur.
D) Ferdinand Cohn.
8. Walther Hesse and ______ pioneered the use of agar as a solidifying
agent.
A) Louis Pasteur
B) Ferdinand Cohn
, C) Robert Koch
D) Sergei Winogradsky
9. Which of the following is/are characteristic of all cellular organisms?
A) communication
B) evolution
C) motilit y
D) communication, evolution, and motilit y
10.Deduce why viruses are excluded from the ribosomal RNA —based tree of
life.
A) Some viruses contain multiple strands of RNA.
B) Their genetic elements cannot be sequenced.
C) They can infect other organisms, which complicates the genetic
comparisons.
D) They lack ribosomal RNA (rRNA).
11.Louis Pasteur developed the vaccine(s) for
A) anthrax onl y.
B) fowl cholera onl y.
C) rabies onl y.
D) anthrax, fowl cholera, and rabies.
12._____ produced by microbial fermentation of glucose from cellulose or
cornstarch is becoming a more imp ortant component of biofuels in the
United States, and specialized _____ are needed to make this a
commerciall y available product.
A) Biodiesel / biotechnologists
B) Biodiesel / industrial microbiologists
C) Ethanol / biotechnologists
D) Ethanol / industrial micro biologists
Test Bank for Brock Biology of Microorganism 16th Edition by Michael T.
Madigan
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
independentl y.
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 significan t 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 no t in overall
biomass.
3. Differential selection and reproduction of phenot ypes 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 catal ysts involved in the acceleration of the rate of chemical
reactions are called
A) catal ytic converters.
B) growth agents.
C) evolutionary molecules.
D) enz ymes.
6. Regarding earl y 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 t ype of life first appeared.
7. The person who described the “wee animalcules” was
A) Robert Hooke.
B) Antoni van Leeuwenhoek.
C) Louis Pasteur.
D) Ferdinand Cohn.
8. Walther Hesse and ______ pioneered the use of agar as a solidifying
agent.
A) Louis Pasteur
B) Ferdinand Cohn
, C) Robert Koch
D) Sergei Winogradsky
9. Which of the following is/are characteristic of all cellular organisms?
A) communication
B) evolution
C) motilit y
D) communication, evolution, and motilit y
10.Deduce why viruses are excluded from the ribosomal RNA —based tree of
life.
A) Some viruses contain multiple strands of RNA.
B) Their genetic elements cannot be sequenced.
C) They can infect other organisms, which complicates the genetic
comparisons.
D) They lack ribosomal RNA (rRNA).
11.Louis Pasteur developed the vaccine(s) for
A) anthrax onl y.
B) fowl cholera onl y.
C) rabies onl y.
D) anthrax, fowl cholera, and rabies.
12._____ produced by microbial fermentation of glucose from cellulose or
cornstarch is becoming a more imp ortant component of biofuels in the
United States, and specialized _____ are needed to make this a
commerciall y available product.
A) Biodiesel / biotechnologists
B) Biodiesel / industrial microbiologists
C) Ethanol / biotechnologists
D) Ethanol / industrial micro biologists
