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GSU BIOLOGY 1104 FINAL | EXPERT
STRATEGIES, REVIEW OF KEY QUIZZES, AND
PRACTICE QUESTIONS FOR GUARANTEED
PASS
Imagine a scenario in which a patient has suffered spinal cord trauma in her low
back. The patient can move her LEFT leg, but she cannot feel pressure or pain in
the LEFT leg.
Part A. Which of the following is likely damaged? CIRCLE ONE (0.5 point)
A.Ventral root associated with left leg
B.Dorsal root associated with left leg
C.Severed spinal cord - correct-answer-B
why the patient is able to move her leg voluntarily. - correct-answer-The spinal
cord is intact, so she can still send signals from her brain to her muscles. Motor
signals leave the cord via the ventral root, thus the ventral root is intact
Explain why the patient is unable to perceive pressure or pain. - correct-answer-
Dorsal root carries sensory information into the spinal cord. If the signal cannot
enter the spinal cord, it cannot reach the brain and be perceived.
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Imagine fish farmers are raising tilapia fish and feed the fishes a hormone that
increases weight of the fish. The hormone is only produced by fishes (i.e. humans
do not produce this hormone). Would the hormones affect human physiology if
the hormone is present in the meat that people eat? Justify your answer
thoughtfully, giving attention to the mechanism by which hormones elicit
responses in target cells. - correct-answer-These hormones likely are safe and
have little effect on humans because we lack receptors for the hormones.
Do you expect spinal reflexes of her left leg to be functional? Why or why not? -
correct-answer-No. The pathway for the spinal reflex is interrupted by damage to
one of the roots. Thus, sensory neurons detecting stimuli such as a painful pinch
would not be able to communicate with motor neurons.
Oxygen moves from water into fish blood by across the gills.
a. bulk flow b. diffusion c. osmosis d. active transport e. secondary active
transport - correct-answer-B
Delivery of gases to and from cells of most insects
a. relies on the circulatory system
b. is primarily controlled by hemoglobin embedded in the cuticle
c. relies primarily during flight on movement of air across pores in the wing
surface
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d. occurs across thin membranes in a series of lung like pouches connected to the
mouth
e. is accomplished by air tubes that branch throughout the body - correct-answer-
B
Body temperature in humans is controlled by
a.positive feedback
b. the hypothalamus
c. the cerebellum
d. ambient temperature
e. skeletal muscles - correct-answer-b
The skeletons of sharks, rays, and, skates are composed of
a. cartilage
b. chitin
c.bones
d. celluose
e. muscles - correct-answer-a
Why can't amphibians be entirely terrestrial?
a. they only use gills for gas exchange
GSU BIOLOGY 1104 FINAL | EXPERT
STRATEGIES, REVIEW OF KEY QUIZZES, AND
PRACTICE QUESTIONS FOR GUARANTEED
PASS
Imagine a scenario in which a patient has suffered spinal cord trauma in her low
back. The patient can move her LEFT leg, but she cannot feel pressure or pain in
the LEFT leg.
Part A. Which of the following is likely damaged? CIRCLE ONE (0.5 point)
A.Ventral root associated with left leg
B.Dorsal root associated with left leg
C.Severed spinal cord - correct-answer-B
why the patient is able to move her leg voluntarily. - correct-answer-The spinal
cord is intact, so she can still send signals from her brain to her muscles. Motor
signals leave the cord via the ventral root, thus the ventral root is intact
Explain why the patient is unable to perceive pressure or pain. - correct-answer-
Dorsal root carries sensory information into the spinal cord. If the signal cannot
enter the spinal cord, it cannot reach the brain and be perceived.
,2|Page
Imagine fish farmers are raising tilapia fish and feed the fishes a hormone that
increases weight of the fish. The hormone is only produced by fishes (i.e. humans
do not produce this hormone). Would the hormones affect human physiology if
the hormone is present in the meat that people eat? Justify your answer
thoughtfully, giving attention to the mechanism by which hormones elicit
responses in target cells. - correct-answer-These hormones likely are safe and
have little effect on humans because we lack receptors for the hormones.
Do you expect spinal reflexes of her left leg to be functional? Why or why not? -
correct-answer-No. The pathway for the spinal reflex is interrupted by damage to
one of the roots. Thus, sensory neurons detecting stimuli such as a painful pinch
would not be able to communicate with motor neurons.
Oxygen moves from water into fish blood by across the gills.
a. bulk flow b. diffusion c. osmosis d. active transport e. secondary active
transport - correct-answer-B
Delivery of gases to and from cells of most insects
a. relies on the circulatory system
b. is primarily controlled by hemoglobin embedded in the cuticle
c. relies primarily during flight on movement of air across pores in the wing
surface
, 3|Page
d. occurs across thin membranes in a series of lung like pouches connected to the
mouth
e. is accomplished by air tubes that branch throughout the body - correct-answer-
B
Body temperature in humans is controlled by
a.positive feedback
b. the hypothalamus
c. the cerebellum
d. ambient temperature
e. skeletal muscles - correct-answer-b
The skeletons of sharks, rays, and, skates are composed of
a. cartilage
b. chitin
c.bones
d. celluose
e. muscles - correct-answer-a
Why can't amphibians be entirely terrestrial?
a. they only use gills for gas exchange
