BIO 152 EXAM 2 WITH CORRECT
ANSWERS 2025
The bones in the middle ear act to:
a) filter out low frequency sounds.
b) transfer energy from the movement of the ear drum to the oval
window.
c) amplify the signal before it reaches the oval window.
d) dampen sounds that are too loud.
e) Both b and c are correct. correct answers >> e) Both b
and c are correct.
If the oval window of the inner ear were punctured that person
would lose the ability to:
a) hear high frequency sounds
b) hear low frequency sounds
c) hear middle frequency sounds
d) hear all sounds
e) it would cause no change to haring ability correct answers
>> d) hear all sounds
In a population of field mice in the Sand Hills of Nebraska, some
individuals have lighter coat colors than others. Which of the
following would be the most efficient way of determining whether
the lighter coat color is a heritable trait?
a) Obtaining DNA sequence from the individuals
, b) Breeding the mice of both colors in the lab and observing the
coat colors of their offspring
c) Performing a chemical analysis of the coat hairs
d) Conducting a field experiment to observe whether the lighter
mice have a lower risk of predation than the darker mice
e) Comparing the number of offspring produced by light- and
dark-colored mice correct answers >> b) Breeding the mice
of both colors in the lab and observing the coat colors of their
offspring
A researcher is studying a mouse strain having the characteristic
that exposure to light results in the depolarization of
photoreceptors. Mice of this strain have normally functioning
photoreceptors, and would respond to changes in light.
a) True
b) False correct answers >> b) False
Bats are able to hear frequencies of 100,000 cycles per second.
The maximum firing rate of action potentials is a few hundred per
second. How is this possible?
a) Action potentials are not used to transmit auditory information.
The output of the sensory neuron to the brain is a graded
potential.
b) The auditory system is special. Its neurons conduct signals very
quickly and have no refractory period.
c) Sound wave frequency information is coded by differences in
the location of vibrations along the basilar membrane, not in
action potential frequency.
d) None of the above. correct answers >> c) Sound wave
frequency information is coded by differences in the location of
ANSWERS 2025
The bones in the middle ear act to:
a) filter out low frequency sounds.
b) transfer energy from the movement of the ear drum to the oval
window.
c) amplify the signal before it reaches the oval window.
d) dampen sounds that are too loud.
e) Both b and c are correct. correct answers >> e) Both b
and c are correct.
If the oval window of the inner ear were punctured that person
would lose the ability to:
a) hear high frequency sounds
b) hear low frequency sounds
c) hear middle frequency sounds
d) hear all sounds
e) it would cause no change to haring ability correct answers
>> d) hear all sounds
In a population of field mice in the Sand Hills of Nebraska, some
individuals have lighter coat colors than others. Which of the
following would be the most efficient way of determining whether
the lighter coat color is a heritable trait?
a) Obtaining DNA sequence from the individuals
, b) Breeding the mice of both colors in the lab and observing the
coat colors of their offspring
c) Performing a chemical analysis of the coat hairs
d) Conducting a field experiment to observe whether the lighter
mice have a lower risk of predation than the darker mice
e) Comparing the number of offspring produced by light- and
dark-colored mice correct answers >> b) Breeding the mice
of both colors in the lab and observing the coat colors of their
offspring
A researcher is studying a mouse strain having the characteristic
that exposure to light results in the depolarization of
photoreceptors. Mice of this strain have normally functioning
photoreceptors, and would respond to changes in light.
a) True
b) False correct answers >> b) False
Bats are able to hear frequencies of 100,000 cycles per second.
The maximum firing rate of action potentials is a few hundred per
second. How is this possible?
a) Action potentials are not used to transmit auditory information.
The output of the sensory neuron to the brain is a graded
potential.
b) The auditory system is special. Its neurons conduct signals very
quickly and have no refractory period.
c) Sound wave frequency information is coded by differences in
the location of vibrations along the basilar membrane, not in
action potential frequency.
d) None of the above. correct answers >> c) Sound wave
frequency information is coded by differences in the location of
