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Test Bank For Brock Biology of Microorganisms 15th Edition By Michael T. Madigan
Brock Biology of Microorganisms, 15e (Madigan et al.) Chapter
- The Microbial World
- Microbial cells can exist as single cells.
- Microbial cells carry out their life processes of growth independently.
- Microbial cells include both bacteria and viruses.
- Microbial cells are surrounded by a plasma membrane.
1.1 Multiple Choice Questions 1) Which of the following statements is FALSE?
2) Which of the following statements is correct?
- Microorganisms are significant contributors to the total biomass on Earth.
- Microorganisms represent a much smaller amount of Earth’s biomass than plants.
- Microorganisms represent a much smaller amount of Earth’s biomass than animals.
- Microorganisms are significant in number, but not in overall biomass.
3) Differential selection and reproduction of phenotypes occurs during a process called
- cellular differentiation.
- evolution.
- growth.
- transformation.
4) In what/which domain(s) of life is/are microorganisms represented?
- Archaea
- Bacteria
- Eukarya
- Archaea, Bacteria, and Eukarya
5) Biological catalysts involved in the acceleration of the rate of chemical reactions are called
- catalytic converters.
- growth agents.
- evolutionary molecules.
- enzymes.
6) Regarding early life on Earth
- microbial life existed for billions of years before plant and animal life.
- microbial life existed long before animals but has been around for about the same amount of time as plants.
- microbial life, plant life, and animal life all appeared at about the same time.
- it is impossible to determine which type of life first appeared. 3 / 4
7) The person who described the “wee animalcules” was
- Robert Hooke.
- Antoni van Leeuwenhoek.
- Louis Pasteur.
- Ferdinand Cohn.
Chapter Section: 1.5
8) Walther Hesse and pioneered the use of agar as a solidifying agent.
- Louis Pasteur
- Ferdinand Cohn
- Robert Koch
- Sergei Winogradsky
9) Which of the following is/are characteristic of all cellular organisms?
- communication
- evolution
- motility
- communication, evolution, and motility
10) Deduce why viruses are excluded from the ribosomal RNA—based tree of life.
- Some viruses contain multiple strands of RNA.
- Their genetic elements cannot be sequenced.
- They can infect other organisms, which complicates the genetic comparisons.
- They lack ribosomal RNA (rRNA).
3 11) Louis Pasteur developed the vaccine(s) for
- anthrax only.
- fowl cholera only.
- rabies only.
- anthrax, fowl cholera, and rabies.
Chapter Section: 1.9
12) The discovery of antibiotics and other important chemicals led to the field of
- industrial microbiology.
- agricultural microbiology.
- marine microbiology.
- aquatic microbiology.
13) Microbial sterilization is used to
- decrease the possibility of contaminants growing in a culture.
- kill bacteria but not necessarily viruses or other microbes.
- kill all microbes in or on objects.
- clean a work area.
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