PCB 3023 Final Exam 08/27/2026
PCB 3023 Final Exam 2: (Latest Update 2026 /
2027) Molecular Cell Biology | Questions &
Answers | Grade A | 100% Correct - UCF
What is the primary cause of increased nitrogen in animals?
a. absorption by the blood during respiration
b. high concentrations in water sources
c. inability to metabolize nitrogen gas
d. the consumption of proteins –
Correct Answer :D
Which is NOT used by animals to remove excess nitrogen?
a. urea
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, PCB 3023 Final Exam 08/27/2026
b. ammonia
c. uric acid
d. nitrite –
Correct Answer :D
Which heat transfer method occurs with contact?
a. convection
b. evaporation
c. radiation
d. conduction –
Correct Answer :D
The amount of heat due to radiation increases with the ______ power of absolute temperature
a. first
b. second
c. third
d. fourth
e. fifth –
Correct Answer :D
Wind causes heat transfer by
a. convection
b. evaporation
c. radiation
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, PCB 3023 Final Exam 08/27/2026
d. conduction –
Correct Answer :A
Which heat transfer method in organisms causes only cooling?
a. convection
b. evaporation
c. radiation
d. conduction –
Correct Answer :B
What characteristic of an organism would increase the energy required to maintain its temperature?
a. high thermal inertia
b. low surface area
c. a large temperature difference
d. a thick boundary layer - Correct Answer :C
An organism that does not maintain a constant body temperature is a(n)
a. ectotherm.
b. endotherm.
c. homeotherm.
d. poikilotherm. - Correct Answer :D
Which of the following is an endotherm?
a. an ant
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, PCB 3023 Final Exam 08/27/2026
b. a whale
c. a tree
d. a snake - Correct Answer :B
Which is an adaptation to manage cold in extremities?
a. blood shunting
b. concurrent circulation
c. lack of precapillary sphincters
d. increased insulation - Correct Answer :A
Which method of heat transfer is used assist in population estimates?
a. conduction
b. convection
c. evaporation
d. radiation - Correct Answer :D
The primary source of heat on Earth is
a. evaporation.
b. convection.
c. radiation.
d. conduction. - Correct Answer :C
Which of the following is a categorical variable?
a. color
b. pressure
c. light
d. energy - Correct Answer :A
P a g e 4 | 93
PCB 3023 Final Exam 2: (Latest Update 2026 /
2027) Molecular Cell Biology | Questions &
Answers | Grade A | 100% Correct - UCF
What is the primary cause of increased nitrogen in animals?
a. absorption by the blood during respiration
b. high concentrations in water sources
c. inability to metabolize nitrogen gas
d. the consumption of proteins –
Correct Answer :D
Which is NOT used by animals to remove excess nitrogen?
a. urea
P a g e 1 | 93
, PCB 3023 Final Exam 08/27/2026
b. ammonia
c. uric acid
d. nitrite –
Correct Answer :D
Which heat transfer method occurs with contact?
a. convection
b. evaporation
c. radiation
d. conduction –
Correct Answer :D
The amount of heat due to radiation increases with the ______ power of absolute temperature
a. first
b. second
c. third
d. fourth
e. fifth –
Correct Answer :D
Wind causes heat transfer by
a. convection
b. evaporation
c. radiation
P a g e 2 | 93
, PCB 3023 Final Exam 08/27/2026
d. conduction –
Correct Answer :A
Which heat transfer method in organisms causes only cooling?
a. convection
b. evaporation
c. radiation
d. conduction –
Correct Answer :B
What characteristic of an organism would increase the energy required to maintain its temperature?
a. high thermal inertia
b. low surface area
c. a large temperature difference
d. a thick boundary layer - Correct Answer :C
An organism that does not maintain a constant body temperature is a(n)
a. ectotherm.
b. endotherm.
c. homeotherm.
d. poikilotherm. - Correct Answer :D
Which of the following is an endotherm?
a. an ant
P a g e 3 | 93
, PCB 3023 Final Exam 08/27/2026
b. a whale
c. a tree
d. a snake - Correct Answer :B
Which is an adaptation to manage cold in extremities?
a. blood shunting
b. concurrent circulation
c. lack of precapillary sphincters
d. increased insulation - Correct Answer :A
Which method of heat transfer is used assist in population estimates?
a. conduction
b. convection
c. evaporation
d. radiation - Correct Answer :D
The primary source of heat on Earth is
a. evaporation.
b. convection.
c. radiation.
d. conduction. - Correct Answer :C
Which of the following is a categorical variable?
a. color
b. pressure
c. light
d. energy - Correct Answer :A
P a g e 4 | 93
