1
Microbiology 3200 with Mehari Exam 2 Version 1
Questions with Answers (100% Correct Answers)
In many bacteria, the electron carrier __________ is used for biosynthesis,
whereas __________ feeds the electron transport system.
a. NADPH; NADH
b. FADH2; NADPH
c. NADH; acetyl-S- CoA
d. chlorophyll; NADPH Answer: a
The enzyme pyruvate kinase catalyzes the conversion of
phosphoenolpyruvate to pyruvate; the phosphate group is transferred
to ADP to form ATP. This reaction is an example of
a. ATP synthesis by substrate-level phosphorylation.
b. ATP synthesis by the use of PMF FoF1 ATPases.
c. ATP coupled to FADH2 oxidation.
d. Oxidative phosphorylation. Answer: a
© 2025 All rights reserved
,2
Which of the following pairs is mismatched?
a. Embden-Meyerhof-Parnas pathway----2ATP, 2 NADH
b. Entner-Doudoroff pathway-----1ATP, 1 NADH, and 1 NADPH
c. Pentose phosphate pathway---1 ATP, 2 NADHa.
d. Bacterial tricarboxylic acid cycle---3 NADH, 1 FADH2, 1 ATP Answer: c
Fatty acids and peptides enter the TCA cycle after being converted to
what molecule?
a. acetyl- phosphate
b. Oxaloacetate
c. Acetyl-CoA
d. Glyceraldehyde 3-phosphate
e. Pyruvate Answer: c
Glucose is activated by __________phosphorylation(s) by ATP during the
first stage of the EMP glycolysis pathway.
a. one
© 2025 All rights reserved
, 3
b. two
c. three
d. four
e. Glucose is not phosphorylated. Answer: b
In glycolysis, dihydroxyacetone phosphate is isomerized to
_______________________________________, which enters the second stage
of the pathway.
a. glucose 6-phosphate
b. glyceraldehyde 3 phosphate
c. phosphoenolpyruvate
d. fructose 6-phosphate
e. pyruvate Answer: b
Which of the following s NOT an end product of fermentation?
a. carbon dioxide
b. acetone
© 2025 All rights reserved
Microbiology 3200 with Mehari Exam 2 Version 1
Questions with Answers (100% Correct Answers)
In many bacteria, the electron carrier __________ is used for biosynthesis,
whereas __________ feeds the electron transport system.
a. NADPH; NADH
b. FADH2; NADPH
c. NADH; acetyl-S- CoA
d. chlorophyll; NADPH Answer: a
The enzyme pyruvate kinase catalyzes the conversion of
phosphoenolpyruvate to pyruvate; the phosphate group is transferred
to ADP to form ATP. This reaction is an example of
a. ATP synthesis by substrate-level phosphorylation.
b. ATP synthesis by the use of PMF FoF1 ATPases.
c. ATP coupled to FADH2 oxidation.
d. Oxidative phosphorylation. Answer: a
© 2025 All rights reserved
,2
Which of the following pairs is mismatched?
a. Embden-Meyerhof-Parnas pathway----2ATP, 2 NADH
b. Entner-Doudoroff pathway-----1ATP, 1 NADH, and 1 NADPH
c. Pentose phosphate pathway---1 ATP, 2 NADHa.
d. Bacterial tricarboxylic acid cycle---3 NADH, 1 FADH2, 1 ATP Answer: c
Fatty acids and peptides enter the TCA cycle after being converted to
what molecule?
a. acetyl- phosphate
b. Oxaloacetate
c. Acetyl-CoA
d. Glyceraldehyde 3-phosphate
e. Pyruvate Answer: c
Glucose is activated by __________phosphorylation(s) by ATP during the
first stage of the EMP glycolysis pathway.
a. one
© 2025 All rights reserved
, 3
b. two
c. three
d. four
e. Glucose is not phosphorylated. Answer: b
In glycolysis, dihydroxyacetone phosphate is isomerized to
_______________________________________, which enters the second stage
of the pathway.
a. glucose 6-phosphate
b. glyceraldehyde 3 phosphate
c. phosphoenolpyruvate
d. fructose 6-phosphate
e. pyruvate Answer: b
Which of the following s NOT an end product of fermentation?
a. carbon dioxide
b. acetone
© 2025 All rights reserved
