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  • January 30, 2025
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TEST BANK FOR BROCK BIOLOGY OF
iu iu iu iu iu




MICROORGANISM
iu
Test Bank For Brock Biology of
txti
16TH EDITION BY MICHAEL
txti txti txti txti
iu iu iu iu




T.MADIGAN
iu iu




Chapter 1 t x ti t x t i t x t i The Microbial World tx t i t xt i




1.1 Multiple Choice Questions txti tx ti




1) Which of the following statements is FALSE?
txti tx ti txti txti txti txti




A) Microbial cells can exist as single cells. tx t i txti txti txti txti tx ti




B) Microbial cells carry out their life processes of growth independently.
txti txti txti iu txti txti txti txti txti




C) Microbial cells include both bacteria and viruses. txt i txti txti txt i txt i txti




D) Microbial cells are surrounded by a plasma membrane. txti txti txti txti txti tx t i t xt i




2) Which of the following statements is correct?
txti txti txti txti txti txti




A) Microorganisms are significant contributors to the total biomass on Earth. txti txti txti txti txti txti txt i txti txti




B) Microorganisms represent a much smaller amount of Earth’s biomass than plants. txti txti txti txti txti txti txti txti txti txti




C) Microorganisms represent a much smaller amount of Earth’s biomass than animals. txti txti txti tx t i txti t xti txti txti txti txti




D) Microorganisms are significant in number, but not in overall biomass. txti txti txti txti txti txti txti txti txti




3) Differential selection and reproduction of phenotypes occurs during a process called
txti txti txt i txti txti txti txt i txti txti txti




A) cellular differentiation. txti




B) evolution.
C) growth.
D) transformation.




4) In what/which domain(s) of life is/are microorganisms represented?
txti txti t x ti txti txti txti txti




A) Archaea
B) Bacteria
C) Eukarya
D) Archaea, Bacteria, and Eukarya txti txti txti




5) Biological catalysts involved in the acceleration of the rate of chemical reactions are called
txti txti t xt i txti txti txt i txt i txt i txti txti txti txti txt i




A) catalytic converters. txti




B) growth agents. tx ti




C) evolutionary molecules. txti




D) enzymes.

,6) Regarding early life on Earth
txti txti txti tx t i




A) microbial life existed for billions of years before plant and animal life.
txti txt i txti txti tx ti txti txti txti txti txti txti




B) microbial life existed long before animals but has been around for about the same amount of time as
txti txti txti txti txti txti txti txti t xt i txti t xt i txti txti tx ti t xt i txti txti




plants.
txti




C) microbial life, plant life, and animal life all appeared at about the same time.
txti txti txt i txt i txti txti txti txti txti txti txti txti tx ti




D) it is impossible to determine which type of life first appeared.
txti t xt i txti txti txti txti txti txti txti txti

,7) The person who described the “wee animalcules” was
txti txti txti txti tx t i txti txti




A) Robert Hooke. iu


B) Antoni van Leeuwenhoek. txti txti




C) Louis Pasteur. txti




D) Ferdinand Cohn. txti




Chapter Section: txti t x t i t x t i 1.5

8) Walther Hesse and txt i txti pioneered the use of agar as a solidifying agent. txti t x t i txti txti txti txti txti txti




A) Louis Pasteur txti




B) Ferdinand Cohn txti




C) Robert Koch txti




D) Sergei Winogradsky txti




0

9) Which of the following is/are characteristic of all cellular organisms?
tx t i txti tx ti t x ti txt i txt i txti t x ti t xt i




A) communication
B) evolution
C) motility
D) communication, evolution, and motility txti txti txti




10) Deduce why viruses are excluded from the ribosomal RNA—based tree of life.
txti txti txti txt i txti txti tx t i txti txt i txti txt i




A) Some viruses contain multiple strands of RNA.
txti tx t i tx ti tx ti txti txti




B) Their genetic elements cannot be sequenced.
txti txti txti txti txti




C) They can infect other organisms, which complicates the genetic comparisons.
txt i txt i txti txti txti txti txti txt i txti




D) They lack ribosomal RNA (rRNA).
txti txti txti t xt i




3
11) Louis Pasteur developed the vaccine(s) for
txti txti txti txti txti




A) anthrax only. iu


B) fowl cholera only.
txti txti




C) rabies only. txti




D) anthrax, fowl cholera, and rabies. txti txti txti txti




Chapter Section: txti t x t i t x t i 1.9

12) The discovery of antibiotics and other important chemicals led to the field of
txti txti txti txti tx ti txti txti t xt i txti txti txti txti




A) industrial microbiology. txti




B) agricultural microbiology. txti




C) marine microbiology. txti




D) aquatic microbiology. txti




13) Microbial sterilization is used to txt i txti txti txti




A) decrease the possibility of contaminants growing in a culture.
t xt i txti tx ti txt i txti t x ti txti tx t i




B) kill bacteria but not necessarily viruses or other microbes.
txti txti txti txti txti txti txti t xti




C) kill all microbes in or on objects.
txti txti txti tx ti txti txti




D) clean a work area. tx ti txti txti

, Chapter Section: txti t x t i t x t i 1.9

14) Transparent double-sided dishes used for growing microbes are most commonly called txti t xti txti txti txti txti txti txti txti txti




A) Petri dishes. txti




B) baker dishes. txt i




C) sterilization plates. txti




D) culture medium plates. txti txti




0


15) Microbes playing a role in nitrogen fixation in plants live in , while those playing a role in the
txti txti txti txti txti txti txti txti txti txti txti txti txti txti txti txti txti




digestive tract ofcertain herbivores live in
txti txti . txti txti txti txti




A) rumens / nodules txt i t xt i




B) nodules / rumens tx t i tx ti




C) nodules / fortrans txti txti




D) fortrans / rumens txti txti




16) Which of the following is NOT an accomplishment of Louis Pasteur?
txti txti tx ti txti txti txt i txti txti txti txti




A) determined that the alcohol-making process was mediated by microbial fermentation and thus
txti txti txti txti txti txti txti txti txti txti txti




refuted the theory ofspontaneous generation
txti t x t i txti txti txti




B) developed enrichment culture techniques txti iu txti




C) developed heat sterilization techniques that involved the creation of a specialized swan-necked flask
txti txti txti txti txti txti txti txti txti txti txti txt i




D) developed the first rabies vaccine and treated thousands of individuals
txti txt i txti txti tx ti txt i tx ti txti txti




Chapter Section: txti t x t i t x t i 1.9

17) The theory of spontaneous generation was refuted by the work of
txti txti txti t xt i txti txti txti txti txti txt i




A) Louis Pasteur. txti




B) Robert Koch. txti




C) Robert Hooke. txti




D) Antoni van Leeuwenhoek. txti txti




Chapter Section: txti t x t i t x t i 1.9

18) A Pasteur flask has a(n)
txti txti txti txti




A) swan neck to prevent particulate matter from getting into the main body of the flask.
txti txti txti txti txti txti tx ti t xt i tx t i txti txti txt i txti txti




B) double neck so two substances may be added at the same time.
txti txti txti txti txti txti txti txti txti txti txti




C) secondary opening at the base to allow for drainage. txti t xt i txti txti txti txti tx ti tx t i




D) inverted upper edge to prevent spillage while swirling.
txti txti txti txti txt i txti txt i




Chapter Section: txti t x t i t x t i 1.9


19) Predict how Pasteur’s conclusions on spontaneous generation with swan flasks would have changed if
txti txti txti txti txti txti txti txti txti txti txti txti txti




he worked with andmaintained the flasks in a sterile laminar flow hood.
txti txti txti txti t x t i t x t i txti t x t i t x t i t x t i t x t i txti




A) Sterilization of the swan flask solutions would not have been necessary to reject spontaneous
t x t i t x t i txti txti txti txti txti txti t x t i txti txti txti t x t i




generation. If he did sterilizethe flasks, the spontaneous generation hypothesis would have been
txti txti txti txti txti t x t i t x t i t x t i txti t x t i txti t x t i t x t i




supported.
t x t i




B) His incubation times would not have been sufficient to refute spontaneous generation.
txti t x ti txti txti txti txti txt i txti txti tx ti txti




C) Pasteur’s flasks never would have putrefied, and the experiment would not have refuted spontaneous generation.
txti txti txti txti txti txti txti txti txti txti txti txti txti txti




D) Viruses would have still been present, and his conclusion would have been unchanged.
txti txti tx ti txti tx ti txti txt i txt i txti txti txti txt i

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