Test Bank for Animal
Physiology, 4th Edition by Hill,
Wyse & Anderson – Updated
2026/2027 Study Resource
with Verified Questions and
Answers
1. Which statement about the discipline of physiology is false?
a. It is a key discipline for understanding how animals change over Earth’s
history.
b. It is a key discipline for understanding the fundamental biology of all animals.
c. It is a key discipline for understanding human health and disease.
d. It is a key discipline for understanding the health and disease of nonhuman
animals.
a. It is a key discipline for understanding how animals change over Earth's history.
2. To understand how a fish propels itself by applying forces to the water,
physiologists would study its
a. biomechanics.
b. evolution.
,c. ecology.
d. cell physiology.
a. biomechanics.
3. The data in the graph below would be relevant to which subdiscipline of
physiology?
a. Evolution
b. Cell physiology
c. Morphology
d. Ecology
d. Ecology
4. In the study of physiology, the term "_______" refers to the components of
living animals and the interactions among those components that enable
animals to perform as they do.
a. feedback
b. regulation
c. natural selection
d. mechanism
d. mechanism
5. How is the light reaction in the firefly inhibited?
a. Mitochondria prevent oxygen from reacting with luciferyl-AMP.
b. Nitric oxide combines with oxygen to prevent reaction with luciferyl-AMP.
c. ATP is prevented from combining with luciferin.
d. Luciferase is prevented from catalyzing the reaction.
a. Mitochondria prevent oxygen from reacting with luciferyl-AMP.
6. Which of the following is not needed in the mechanism of light production in
the firefly?
a. Oxygen
b. ATP
, c. Light
d. Luciferin
c. Light
7. In the firefly, light is emitted when
a. ATP combines with luciferin, forming luciferyl-AMP.
b. released nitric oxide blocks the mitochondria's use of oxygen.
c. the electron-excited product of O2 and luciferyl-AMP returns to its ground
state.
d. luciferase is activated by oxygen.
c. the electron-excited product of O2 and luciferyl-AMP returns to its ground
state.
8. Which of the following is considered the "on" switch for the light-emitting
reaction of the firefly?
a. Oxygen
b. Luciferase
c. Nitric oxide
d. ATP
c. Nitric oxide
9. A physiological mechanism or other trait that is a product of evolution and is
advantageous is called
a. an adaptation.
b. natural selection.
c. adaptive significance.
d. evolution.
a. an adaptation.
10. What is the adaptive significance of light emission in the firefly?
a. Female fireflies emit light in such a way that distinguishes their species.
b. All fireflies emit light to lure prey.
Physiology, 4th Edition by Hill,
Wyse & Anderson – Updated
2026/2027 Study Resource
with Verified Questions and
Answers
1. Which statement about the discipline of physiology is false?
a. It is a key discipline for understanding how animals change over Earth’s
history.
b. It is a key discipline for understanding the fundamental biology of all animals.
c. It is a key discipline for understanding human health and disease.
d. It is a key discipline for understanding the health and disease of nonhuman
animals.
a. It is a key discipline for understanding how animals change over Earth's history.
2. To understand how a fish propels itself by applying forces to the water,
physiologists would study its
a. biomechanics.
b. evolution.
,c. ecology.
d. cell physiology.
a. biomechanics.
3. The data in the graph below would be relevant to which subdiscipline of
physiology?
a. Evolution
b. Cell physiology
c. Morphology
d. Ecology
d. Ecology
4. In the study of physiology, the term "_______" refers to the components of
living animals and the interactions among those components that enable
animals to perform as they do.
a. feedback
b. regulation
c. natural selection
d. mechanism
d. mechanism
5. How is the light reaction in the firefly inhibited?
a. Mitochondria prevent oxygen from reacting with luciferyl-AMP.
b. Nitric oxide combines with oxygen to prevent reaction with luciferyl-AMP.
c. ATP is prevented from combining with luciferin.
d. Luciferase is prevented from catalyzing the reaction.
a. Mitochondria prevent oxygen from reacting with luciferyl-AMP.
6. Which of the following is not needed in the mechanism of light production in
the firefly?
a. Oxygen
b. ATP
, c. Light
d. Luciferin
c. Light
7. In the firefly, light is emitted when
a. ATP combines with luciferin, forming luciferyl-AMP.
b. released nitric oxide blocks the mitochondria's use of oxygen.
c. the electron-excited product of O2 and luciferyl-AMP returns to its ground
state.
d. luciferase is activated by oxygen.
c. the electron-excited product of O2 and luciferyl-AMP returns to its ground
state.
8. Which of the following is considered the "on" switch for the light-emitting
reaction of the firefly?
a. Oxygen
b. Luciferase
c. Nitric oxide
d. ATP
c. Nitric oxide
9. A physiological mechanism or other trait that is a product of evolution and is
advantageous is called
a. an adaptation.
b. natural selection.
c. adaptive significance.
d. evolution.
a. an adaptation.
10. What is the adaptive significance of light emission in the firefly?
a. Female fireflies emit light in such a way that distinguishes their species.
b. All fireflies emit light to lure prey.
