Microbiology Exam 2 (Multiple Choice Questions) Comprehensive Q&A Guaranteed Pass

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MICROBIOLOGY EXAM 2 (MULTIPLE CHOICE
QUESTIONS) COMPREHENSIVE Q&A
GUARANTEED PASS 2026\2027



An apoenzyme is

a. part of a simple enzyme

b. also called a coenzyme

c. the protein part of a holoenzyme

d. often an inorganic metal ion

e. an RNA molecule - CORRECT ANSWER -c. the protein part of a holoenzyme




During which of the phases of cellular respiration is the majority of ATP formed?

a. electron transport

b. Krebs cycle

c. glycolysis

d. processing of pyretic acid for the Kreb's cycle

e. all phases produce the same number of ATP molecules - CORRECT ANSWER -a.
electron transport

As the electron transport carriers shuttle electrons, they actively pump _____ into
the outer membrane compartment setting up a concentration gradient called the
proton motive force

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a. ATP

b. phosphate

c. hydrogen ions

d. oxygen

e. NADH - CORRECT ANSWER -c. hydrogen ions




ATP molecules are catalysts that lower the activation energy needed to initiate a
reaction (T/F)

a. true

b. false - CORRECT ANSWER -b. false




Fermentation

a. requires an organic electron acceptor

b. requires oxygen

c. only occurs in aerobic organisms

d. is equivalent to aerobic respiration in ATP production

e. none of the choices is correct - CORRECT ANSWER -a. requires an organic
electron acceptor

Formation of glycosidic bonds between carbohydrate monomers to synthesize
polysaccharides would be called

a. anabolism