2026/2027 Test Bank for Brock Biology of Microorganisms 14th Edition Chapter 3

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Microbiology, Lecture (Ateneo de Manila University)




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Brock Biology of Microorganisms, 14e (Madigan et al.)
Chapter 3 Microbial Metabolism

Multiple Choice Questions

1) The sum of all biosynthetic reactions in a cell is known as
A) metabolism.
B) anabolism.
C) catabolism.
D) synthatabolism.
Answer: B
Bloom's Taxonomy: Knowledge
Chapter Section: 3.13

2) Based on the functional roles of phosphate in various microbial metabolisms, deduce which
compounds phosphate exists as in microorganisms.
A) organic compounds
B) inorganic compounds
C) both organic and inorganic compounds
D) neither organic nor inorganic compounds
Answer: C
Bloom's Taxonomy: Evaluation
Chapter Section: 3.1

3) Which of the following would be used by a chemoorganotroph for energy?
A) C2H3O2-
B) H2
C) CO2
D) H+
Answer: A
Bloom's Taxonomy: Comprehension
Chapter Section: 3.3

4) Which of the following statements is FALSE?
A) Most bacteria are capable of using ammonia as their sole nitrogen source.
B) Some bacteria are able to use nitrates or nitrogen gas as their nitrogen source.
C) Most available nitrogen is in organic forms.
D) Nitrogen is a major component of proteins and nucleic acids.
Answer: C
Bloom's Taxonomy: Knowledge
Chapter Section: 3.1




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5) All microorganisms require
A) carbon, iron, and sodium.
B) phosphorus, aluminum, and sodium.
C) calcium, potassium, and magnesium.
D) phosphorus, selenium, and sulfur.
Answer: D
Bloom's Taxonomy: Knowledge
Chapter Section: 3.1

6) Which element functions BOTH as an enzyme cofactor and as a stabilizer of ribosomes and
nucleic acids?
A) iron
B) hydrogen
C) zinc
D) magnesium
Answer: D
Bloom's Taxonomy: Knowledge
Chapter Section: 3.1

7) Based on your understanding of metabolism, generalize when an enzyme's rate of activity can
be changed.
A) before enzyme production
B) during enzyme production
C) after enzyme production
D) at any point–before, during, or after enzyme production
Answer: C
Bloom's Taxonomy: Synthesis
Chapter Section: 3.5

8) The change in Gibbs free energy for a particular reaction is MOST useful in determining
A) the amount of energy catalysts required for biosynthesis or catabolism.
B) the potential metabolic reaction rate.
C) whether there will be a requirement or production of energy.
D) energy stored in each compound.
Answer: C
Bloom's Taxonomy: Application
Chapter Section: 3.4

9) Which is an example of a micronutrient?
A) arginine
B) inorganic phosphorous
C) iron
D) vitamin B12
Answer: C
Bloom's Taxonomy: Comprehension
Chapter Section: 3.1

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