NURS 629 Exam 2024/2025 Questions
and Answers
An anabolic reaction usually
A) involves no change in energy.
B) decreases molecular order.
C) requires energy.
D) is degradative, regardless of energy change.
E) yields energy. (CORRECT ANSWER)requires energy
The ATP "high-energy" or "energy-rich" bonds are which of the following types of
bond
A) monophosphate
B) hydrogen
C) ionic
D) phosphoester
E) phosphoanhydride (CORRECT ANSWER)phosphoanhydride
Consider the following list of phosphorylated compounds with their free energies of
phosphate hydrolysis:
Glucose-1-phosphate: -5.0 kcal/mol
PEP: -14.8 kcal/mole
ATP: -7.3 kcal/mol
Which of these molecules could phosphorylate an unknown compound whose free
energy of phosphate hydrolysis is -10.3kcal/mol?
A) PEP only
B) Glucose-1-phosphate only
C) ATP only
D) ATP and PEP
E) All three could phosphorylate the unknown compound. (CORRECT ANSWER)A
Oxidation reactions in biological systems generally involve A) addition of electrons
and loss of hydrogen ions.
B) loss of electrons and either addition or loss of hydrogen ions.
C) addition of electrons and hydrogen ions.
D) loss of electrons and addition of hydrogen ions.
E) loss of electrons and hydrogen ions. (CORRECT ANSWER)E
Oxygen is toxic to
A) obligate anaerobes.
B) obligate aerobes.
C) facultative organisms.
D) cancer cells.
E) All of the above. (CORRECT ANSWER)obligate anaerobes
The gross output of ATP from glycolysis is ________, whereas the net output of ATP
is ________.
A) 2; 4 B) 4; 2 C) 2; 1 D) 4; 1 E) 6; 4 (CORRECT ANSWER)4; 2
, Which of the following statements best describes the role of NAD+/NADH in
glycolysis?
A) NADH accepts electrons during fermentation.
B) NADH is used to directly create the phosphoanhydride bonds in ATP.
C) NAD+ accepts electrons.
D) NADH is used primarily in substrate-level phosphorylation.
E) All of the above are correct. (CORRECT ANSWER)C
Consider the three phases of glycolysis:
(1) preparation and cleavage (Gly-1 to Gly-5)
(2) oxidation (Gly-6 to Gly-7)
(3) pyruvate formation (Gly-8 to Gly-10)
Which of these phases produces ATP?
A) 1 B) 2 C) 3 D) 1 and 2 E) 2 and 3 (CORRECT ANSWER)2 and 3
Fermentation directly
A) initiates gluconeogenesis.
B) regenerates NADH from NAD+.
C) produces acetyl CoA.
D) generates ATP.
E) regenerates NAD+ from NADH. (CORRECT ANSWER)E
The process of gluconeogenesis converts pyruvate or lactate into
A) sucrose.
B) glucose.
C) gluconate.
D) fructose.
E) mannose. (CORRECT ANSWER)glucose
In animal cells, glycolysis and gluconeogenesis are regulated to ensure that both
processes are reciprocally active. This regulation involves each of the following
compounds except
A) AMP.
B) cAMP.
C) fructose-2,6-bisphosphate.
D) NADH.
E) acetyl CoA. (CORRECT ANSWER)NADH
How many NADH are produced by glycolysis?
A) 2 B) 3 C) 1 D) 5 (CORRECT ANSWER)2
in glycolysis ATP molecules are produced by
A) substrate level phosphorylation
B) oxidative phosphorylation
C) hydrolysis
D) photosynthesis (CORRECT ANSWER)substrate level phosphorylation
Why are mitochondria so prevalent in skeletal muscle?
and Answers
An anabolic reaction usually
A) involves no change in energy.
B) decreases molecular order.
C) requires energy.
D) is degradative, regardless of energy change.
E) yields energy. (CORRECT ANSWER)requires energy
The ATP "high-energy" or "energy-rich" bonds are which of the following types of
bond
A) monophosphate
B) hydrogen
C) ionic
D) phosphoester
E) phosphoanhydride (CORRECT ANSWER)phosphoanhydride
Consider the following list of phosphorylated compounds with their free energies of
phosphate hydrolysis:
Glucose-1-phosphate: -5.0 kcal/mol
PEP: -14.8 kcal/mole
ATP: -7.3 kcal/mol
Which of these molecules could phosphorylate an unknown compound whose free
energy of phosphate hydrolysis is -10.3kcal/mol?
A) PEP only
B) Glucose-1-phosphate only
C) ATP only
D) ATP and PEP
E) All three could phosphorylate the unknown compound. (CORRECT ANSWER)A
Oxidation reactions in biological systems generally involve A) addition of electrons
and loss of hydrogen ions.
B) loss of electrons and either addition or loss of hydrogen ions.
C) addition of electrons and hydrogen ions.
D) loss of electrons and addition of hydrogen ions.
E) loss of electrons and hydrogen ions. (CORRECT ANSWER)E
Oxygen is toxic to
A) obligate anaerobes.
B) obligate aerobes.
C) facultative organisms.
D) cancer cells.
E) All of the above. (CORRECT ANSWER)obligate anaerobes
The gross output of ATP from glycolysis is ________, whereas the net output of ATP
is ________.
A) 2; 4 B) 4; 2 C) 2; 1 D) 4; 1 E) 6; 4 (CORRECT ANSWER)4; 2
, Which of the following statements best describes the role of NAD+/NADH in
glycolysis?
A) NADH accepts electrons during fermentation.
B) NADH is used to directly create the phosphoanhydride bonds in ATP.
C) NAD+ accepts electrons.
D) NADH is used primarily in substrate-level phosphorylation.
E) All of the above are correct. (CORRECT ANSWER)C
Consider the three phases of glycolysis:
(1) preparation and cleavage (Gly-1 to Gly-5)
(2) oxidation (Gly-6 to Gly-7)
(3) pyruvate formation (Gly-8 to Gly-10)
Which of these phases produces ATP?
A) 1 B) 2 C) 3 D) 1 and 2 E) 2 and 3 (CORRECT ANSWER)2 and 3
Fermentation directly
A) initiates gluconeogenesis.
B) regenerates NADH from NAD+.
C) produces acetyl CoA.
D) generates ATP.
E) regenerates NAD+ from NADH. (CORRECT ANSWER)E
The process of gluconeogenesis converts pyruvate or lactate into
A) sucrose.
B) glucose.
C) gluconate.
D) fructose.
E) mannose. (CORRECT ANSWER)glucose
In animal cells, glycolysis and gluconeogenesis are regulated to ensure that both
processes are reciprocally active. This regulation involves each of the following
compounds except
A) AMP.
B) cAMP.
C) fructose-2,6-bisphosphate.
D) NADH.
E) acetyl CoA. (CORRECT ANSWER)NADH
How many NADH are produced by glycolysis?
A) 2 B) 3 C) 1 D) 5 (CORRECT ANSWER)2
in glycolysis ATP molecules are produced by
A) substrate level phosphorylation
B) oxidative phosphorylation
C) hydrolysis
D) photosynthesis (CORRECT ANSWER)substrate level phosphorylation
Why are mitochondria so prevalent in skeletal muscle?
