Question 1

A receptor potential is a graded potential that occurs in a sensory receptor.

Accepted Answer

A) True 
 B)False

Question 2

What advantage would a flatworm with a simple cup eye have over an organism with no photoreceptor cells?

Accepted Answer

A)  They could see structures
B)  They could see color
C)  They would have depth perception
D)  They could orient themselves by detecting light and shadows
E)  There would be no advantage to having such a simple eyeF) B) and C)
G) A) and E)

Question 3

The brain determines loudness of a sound by the number of neurons that are firing and the rate at which they fire.

Accepted Answer

A) True 
 B)False

Question 4

Colorblindness would be caused by which of the following?

Accepted Answer

A)  Loss of rods
B)  Damage to the optic nerve
C)  Loss of cones
D)  Damage to the retina
E)  Damage to the lensF) B) and D)
G) B) and E)

Question 5

figure 26.17 
-Based on figure 26.17,changes occurred in ____ to transform invertebrate ____ cells into photoreceptors.

Accepted Answer

A)  r-opsin, ciliary
B)  c-opsin, rhabdomeric
C)  c-opsin, ciliary
D)  r-opsin, rhabdomericE) B) and D)
F) B) and C)

Question 6

To correct for nearsightedness convex lenses should be used in eyeglasses.

Accepted Answer

A) True 
 B)False

Question 7

When you feel the sun on your skin,which of the following is being activated?

Accepted Answer

A)  Mechanoreceptor
B)  Photoreceptor
C)  Proprioreceptor
D)  Thermoreceptor
E)  ChemoreceptorF) D) and E)
G) A) and E) D

Question 8

Opsins are membrane bound G-protein coupled receptors.Which of the following would you expect to happen when light strikes a rod or cone in the human eye?

Accepted Answer

A)  Opsin moves into the nucleus, turning on gene expression
B)  Ion channels open generating an action potential
C)  The light moves through the rod or cone into a neuron generating an action potential
D)  Light causes a hormone to bind to the receptor
E)  The light is passed on to a melanopsin molecule in the membraneF) B) and D)
G) A) and E)

Question 9

In a disorder called macular degeneration,photoreceptors in the retina die.How would macular degeneration impair vision?

Accepted Answer

A)  A patient could not see things clearly that are directly in front of them
B)  A patient could not see things with peripheral vision
C)  A patient would become blind
D)  A patient would not be able to see in color
E)  A patient would not be able to see at nightF) A) and B)
G) A) and C)

Question 10

To correct for nearsightedness concave lenses should be used in eyeglasses.

Accepted Answer

A) True 
 B)False

Question 11

You have 20 million olfactory cells and 10 thousand taste buds.Which of the following is true about your sense of smell and taste?

Accepted Answer

A)  You can distinguish 20 million smells and 10 thousand tastes
B)  You can distinguish hundreds of smells and only five tastes
C)  You can distinguish more tastes than smells
D)  You can distinguish the same number of tastes and smells
E)  You can distinguish 20 million smells and only five tastesF) A) and B)
G) None of the above B

Question 12

The point where the optic nerve exits the retina is called the:

Accepted Answer

A)  Fovea centralis
B)  Blind spot
C)  Sclera
D)  Choroid
E)  Pacinian corpuscleF) B) and C)
G) B) and D)

Question 13

In humans taste buds are most highly concentrated on the inside surface of the lips of the mouth.

Accepted Answer

A) True 
 B)False

Question 14

Bone-conduction aids transmit sound waves directly to the oval window.This would bypass which of the following?

Accepted Answer

A)  The inner ear
B)  The outer ear
C)  The auditory canal
D)  The middle ear
E)  The cochleaF) All of the above
G) A) and E)

Question 15

Which of the following senses would utilize chemoreceptors?

Accepted Answer

A)  Vision
B)  Taste
C)  Pain
D)  TouchE) A) and B)
F) B) and C)

Question 16

The fluid that cleanses and nourishes the cornea and lens of the eye is:

Accepted Answer

A)  The vitreous humor
B)  Tear fluid
C)  The aqueous humor
D)  Rhodopsin
E)  Both A and C are correctF) A) and C)
G) B) and D)

Question 17

If a person has been prescribed eyeglasses with uneven lenses it is most likely to correct for that person:

Accepted Answer

A)  Being nearsighted
B)  Being farsighted
C)  Being cross-eyed
D)  Having astigmatism
E)  None of the above are correctF) B) and D)
G) All of the above

Question 18

If a person has been prescribed eyeglasses with convex lenses it is most likely to correct for that person:

Accepted Answer

A)  Being farsighted
B)  Being nearsighted
C)  Having astigmatism
D)  Being cross-eyed
E)  None are correctF) B) and C)
G) C) and E)

Question 19

When you enter a darkened room,the rod cells in your eyes boost their production of rhodopsin,increasing their sensitivity to light over a period of 10 to 30 minutes.How do you think your eyes adjust when you emerge from a movie theater on a sunny day?

Accepted Answer

A)  By increasing the production of rhodopsin
B)  By shutting off the optic nerve
C)  By closing the retina
D)  By closing the lens
E)  By decreasing the production of rhodopsinF) C) and E)
G) C) and D) E

Question 20

A cochlear implant uses a microphone to pick up sound,then a sound processor decomposes it into separate frequency components.Electrodes placed directly in the cochlea stimulate the parts of the auditory nerve corresponding to each frequency.A cochlear implant would bypass which of the following?

Accepted Answer

A)  The cochlea
B)  The eardrum
C)  The auditory nerve
D)  The auditory canal
E)  The outer earF) A) and B)
G) A) and C)

Exam 26: The Senses Content

A receptor potential is a graded potential that occurs in a sensory receptor.

Correct AnswerverifiedShow Answer

What advantage would a flatworm with a simple cup eye have over an organism with no photoreceptor cells?

Correct AnswerverifiedShow Answer

The brain determines loudness of a sound by the number of neurons that are firing and the rate at which they fire.

Correct AnswerverifiedShow Answer

Colorblindness would be caused by which of the following?

Correct AnswerverifiedShow Answer

figure 26.17 -Based on figure 26.17,changes occurred in ____ to transform invertebrate ____ cells into photoreceptors.

Correct AnswerverifiedShow Answer

To correct for nearsightedness convex lenses should be used in eyeglasses.

Correct AnswerverifiedShow Answer

When you feel the sun on your skin,which of the following is being activated?

Correct AnswerverifiedD

Opsins are membrane bound G-protein coupled receptors.Which of the following would you expect to happen when light strikes a rod or cone in the human eye?

Correct AnswerverifiedShow Answer

In a disorder called macular degeneration,photoreceptors in the retina die.How would macular degeneration impair vision?

Correct AnswerverifiedShow Answer

To correct for nearsightedness concave lenses should be used in eyeglasses.

Correct AnswerverifiedShow Answer

You have 20 million olfactory cells and 10 thousand taste buds.Which of the following is true about your sense of smell and taste?

Correct AnswerverifiedB

The point where the optic nerve exits the retina is called the:

Correct AnswerverifiedShow Answer

In humans taste buds are most highly concentrated on the inside surface of the lips of the mouth.

Correct AnswerverifiedShow Answer

Bone-conduction aids transmit sound waves directly to the oval window.This would bypass which of the following?

Correct AnswerverifiedShow Answer

Which of the following senses would utilize chemoreceptors?

Correct AnswerverifiedShow Answer

The fluid that cleanses and nourishes the cornea and lens of the eye is:

Correct AnswerverifiedShow Answer

If a person has been prescribed eyeglasses with uneven lenses it is most likely to correct for that person:

Correct AnswerverifiedShow Answer

If a person has been prescribed eyeglasses with convex lenses it is most likely to correct for that person:

Correct AnswerverifiedShow Answer

When you enter a darkened room,the rod cells in your eyes boost their production of rhodopsin,increasing their sensitivity to light over a period of 10 to 30 minutes.How do you think your eyes adjust when you emerge from a movie theater on a sunny day?

Correct AnswerverifiedE

A cochlear implant uses a microphone to pick up sound,then a sound processor decomposes it into separate frequency components.Electrodes placed directly in the cochlea stimulate the parts of the auditory nerve corresponding to each frequency.A cochlear implant would bypass which of the following?

Correct AnswerverifiedShow Answer

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figure 26.17 -Based on figure 26.17,changes occurred in to transform invertebrate cells into photoreceptors.

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D

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B

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E

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