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Chapter 1 - Brock Biology of Microorganisms Exam Questions With Correct Answers
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Chapter 1 - Brock Biology of Microorganisms Exam Questions With Correct Answers Which of the following statements is FALSE? - answerMicrobial cells include both bacteria and viruses. Which of the following statements is correct? - answerMicroorganisms are significant contributors to the total...

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  • October 18, 2024
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  • 2024/2025
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  • chapter 1 brock biology of microorganisms exam q

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©SIRJOEL EXAM SOLUTIONS
10/3/2024 9:54 PM


Chapter 1 - Brock Biology of
Microorganisms Exam Questions With
Correct Answers



Which of the following statements is FALSE? - answer✔Microbial cells include both bacteria
and viruses.

Which of the following statements is correct? - answer✔Microorganisms are significant
contributors to the total biomass on Earth.
Differential selection and reproduction of phenotypes occurs during a process called -
answer✔evolution

In what/which domain(s) of life is/are microorganisms represented? - answer✔Archaea,
Bacteria, and Eukarya
Biological catalysts involved in the acceleration of the rate of chemical reactions are called -
answer✔enzymes

Regarding early life on Earth - answer✔microbial life existed for billions of years before plant
and animal life.

The person who described the "wee animalcules" was - answer✔Antoni van Leeuwenhoek
Walther Hesse and _____________ pioneered the use of agar as a solidifying agent -
answer✔Robert Koch

Which of the following is/are characteristic of all cellular organisms? - answer✔evolution

Deduce why viruses are excluded from the ribosomal RNA- based tree of life - answer✔they
lack ribosomal RNA (rRNA)

Louise Pasteur developed the vaccine(s) for - answer✔anthrax, fowl cholera, and rabies

, ©SIRJOEL EXAM SOLUTIONS
10/3/2024 9:54 PM

The discovery of antibiotics and other important chemicals led to the field of - answer✔industrial
microbiology

Microbial sterilization is used to - answer✔kill all microbes in or on objects
Transparent double-sided dishes used for growing microbes are most commonly called -
answer✔petri dishes
Microbes playing a role in nitrogen fixation in plants live in ________, while those playing a
role in the digestive tract of certain herbivores live in ________. - answer✔nodules / rumens

Which of the following is NOT an accomplishment of Louis Pasteur? - answer✔developed
enrichment culture techniques

The theory of spontaneous generation was refuted by the work of - answer✔Louis Pasteur

A Pasteur flask has a(n) - answer✔swan neck to prevent particulate matter from getting into the
main body of the flask.
Predict how Pasteur's conclusions on spontaneous generation with swan flasks would have
changed if he worked with and maintained the flasks in a sterile laminar flow hood. -
answer✔Pasteur's flasks never would have putrefied (decayed/rotted), and the experiment would
not have refuted spontaneous generation.

A pure culture - answer✔is a population of identical cells

Martinus Beijerinck was the first to isolate - answer✔green algae, certain nitrogen-fixing root
nodule bacteria, and certain sulfate-reducing bacteria.

Chemolithotrophy involves - answer✔oxidation of inorganic compounds
Developments in the fields of immunology and medical microbiology were practical extensions
of the work of - answer✔Robert Koch

Microbial control in wastewaters would most logically be a part of - answer✔aquatic
microbiology
Robert Koch contributed to the field of microbiology by being the first person to -
answer✔develop the tuberculin test, formulate four postulates for definitively linking a specific
microorganism to a specific disease, and use agar as a solidifying agent in growth media

Mycobacterium tuberculosis is very difficult to stain because of the - answer✔large amounts of a
waxlike lipids present in its cell wall

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