Page 1 of 64
TEST BANK FOR DAVIS ADVANTAGE FOR
PATHOPHYSIOLOGY 3ND EDITION BY
CAPRIOTTI
1. Which statement regarding the sodium–potassium pump is
correct?
A) The cell’s plasma membrane is more soluble to sodium ions
than potassium ions.
B) The concentration of sodium ions should be higher inside the
cell compartment.
C) The concentration of potassium ions should be higher outside
the cell compartment.
D) The active transport involves pumping out three sodium ions
and pumping in two potassium ions.
Answer: D
Rationale: The Na⁺/K⁺-ATPase uses active transport to move
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three Na⁺ out of the cell and two K⁺ into the cell, maintaining the
resting membrane potential and cellular ionic gradients.
2. In the absence of oxygen, which cellular function creates
the same amount of energy as is created in the presence of
oxygen?
A) Dissipation of pyruvic acid
B) Initiation of the citric acid cycle
C) Activation of acetyl-coenzyme A
D) Creation of acidosis via lactic acid
Answer: D
Rationale: Without oxygen, cells rely on anaerobic glycolysis,
converting pyruvate to lactate (lactic acid) and generating only
2 ATP per glucose, compared to ~36 ATP with aerobic
metabolism. The statement refers to the limited ATP produced;
lactic acidosis is a consequence, not equivalent energy.
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3. How many adenosine triphosphates (ATPs) are produced in
aerobic energy metabolism?
A) 2
B) 3
C) 34
D) 53
Answer: C
Rationale: Complete aerobic oxidation of one glucose molecule
yields approximately 30–38 ATP, with 34 being a commonly
cited value in pathophysiology texts; the exact number can vary
depending on cellular conditions.
4. Which cell organelles differ in their number according to the
cell’s energy needs?
A) Ribosomes
B) Mitochondria
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C) Ribonucleic acids
D) Deoxyribonucleic acids
Answer: B
Rationale: Mitochondria are dynamic organelles; cells with high
energy demands (muscle, neurons) contain more mitochondria.
The number of mitochondria can increase or decrease in response
to metabolic needs.
5. Which option best supports the reason more energy is
produced when a person is exercising?
A) Exercise causes an increase in the synthesis of protein.
B) There is an increase in the production of pyruvic acid in the
cells.
C) The conversion of pyruvic acid to lactic acid is increased by
exercise.
D) Muscle cells have more mitochondria to meet energy
demands.
TEST BANK FOR DAVIS ADVANTAGE FOR
PATHOPHYSIOLOGY 3ND EDITION BY
CAPRIOTTI
1. Which statement regarding the sodium–potassium pump is
correct?
A) The cell’s plasma membrane is more soluble to sodium ions
than potassium ions.
B) The concentration of sodium ions should be higher inside the
cell compartment.
C) The concentration of potassium ions should be higher outside
the cell compartment.
D) The active transport involves pumping out three sodium ions
and pumping in two potassium ions.
Answer: D
Rationale: The Na⁺/K⁺-ATPase uses active transport to move
,Page 2 of 64
three Na⁺ out of the cell and two K⁺ into the cell, maintaining the
resting membrane potential and cellular ionic gradients.
2. In the absence of oxygen, which cellular function creates
the same amount of energy as is created in the presence of
oxygen?
A) Dissipation of pyruvic acid
B) Initiation of the citric acid cycle
C) Activation of acetyl-coenzyme A
D) Creation of acidosis via lactic acid
Answer: D
Rationale: Without oxygen, cells rely on anaerobic glycolysis,
converting pyruvate to lactate (lactic acid) and generating only
2 ATP per glucose, compared to ~36 ATP with aerobic
metabolism. The statement refers to the limited ATP produced;
lactic acidosis is a consequence, not equivalent energy.
,Page 3 of 64
3. How many adenosine triphosphates (ATPs) are produced in
aerobic energy metabolism?
A) 2
B) 3
C) 34
D) 53
Answer: C
Rationale: Complete aerobic oxidation of one glucose molecule
yields approximately 30–38 ATP, with 34 being a commonly
cited value in pathophysiology texts; the exact number can vary
depending on cellular conditions.
4. Which cell organelles differ in their number according to the
cell’s energy needs?
A) Ribosomes
B) Mitochondria
, Page 4 of 64
C) Ribonucleic acids
D) Deoxyribonucleic acids
Answer: B
Rationale: Mitochondria are dynamic organelles; cells with high
energy demands (muscle, neurons) contain more mitochondria.
The number of mitochondria can increase or decrease in response
to metabolic needs.
5. Which option best supports the reason more energy is
produced when a person is exercising?
A) Exercise causes an increase in the synthesis of protein.
B) There is an increase in the production of pyruvic acid in the
cells.
C) The conversion of pyruvic acid to lactic acid is increased by
exercise.
D) Muscle cells have more mitochondria to meet energy
demands.
