LifeSci 7C: Midterm 2 Clickers Test
Questions and Answers.
Meniere's Disease is linked to an excessive volume of endolymph fluid. Where in the ear is
endolymph found?
A. Outer ear
B. Middle ear
C. Inner ear
D. B and C
E. A, B, and C - Answer Inner ear.
Although the exact cause of Meniere's Disease remains a mystery, which of the following could
most reasonably be caused by a build up of excessive endolymph fluid?
A. Auditory canal becomes blocked
B. Hair cell function is altered
C. Stapes can no longer vibrate
D. Tympanic membrane is ruptured - Answer B. Hair cell function is altered
Suppose the stereocilia of one hair cell become permanently bent. What will most likely happen
as a consequence?
A. A single pitch will be constantly perceived
B. A single pitch will no longer be perceivable
C. A or B depending on the hair cell's location
D. A or B depending on the bending's direction - Answer A or B depending on bending's
direction.
If a hair cell bends toward the kinocilium, K+ channels will open and the cell will _________.
A. Depolarize
B. Hyperpolarize
C. Stay at the same membrane potential - Answer A. Depolarize
If a hair cell bends toward the kinocilium...
A. It generates action potentials
B. It releases neurotransmitters
C. Both A and B
, D. Neither A nor B - Answer B. It releases neurotransmitters
During an auditory hallucination, sound is perceived without an auditory stimulus. Based on
what you learned about the brain last week, stimulation in which lobe of the brain would be
most likely to generate an auditory hallucination?
A. Frontal lobe
B. Occipital lobe
C. Parietal lobe
D. Temporal lobe - Answer D. Temporal lobe
You wake up in the middle of the night. As you look around the dark room, your pupils
________ to let in ________ light.
A. Constrict; more
B. Constrict; less
C. Dilate; more
D. Dilate; less - Answer C. Dilate; more
You turn on a light so you can get a glass of water. BEFORE you turn on the light, the Effector
Enzyme is activated.
A. True
B. False - Answer B. False
You turn on a light so you can get a glass of water. At the moment the light turns ON, the
concentration of cGMP inside your rods and cones ________.
A. Increases
B. Decreases
C. Does not change - Answer B. Decreases
You turn on a light so you can get a glass of water. At the moment the light turns ON, the
Sodium (Na+) enters the cell.
A. True
B. False - Answer B. False
You turn on a light so you can get a glass of water. At the moment the light turns ON, the
amount of neurotransmitters released by your rods and cones ________.
A. Increases
B. Decreases
Questions and Answers.
Meniere's Disease is linked to an excessive volume of endolymph fluid. Where in the ear is
endolymph found?
A. Outer ear
B. Middle ear
C. Inner ear
D. B and C
E. A, B, and C - Answer Inner ear.
Although the exact cause of Meniere's Disease remains a mystery, which of the following could
most reasonably be caused by a build up of excessive endolymph fluid?
A. Auditory canal becomes blocked
B. Hair cell function is altered
C. Stapes can no longer vibrate
D. Tympanic membrane is ruptured - Answer B. Hair cell function is altered
Suppose the stereocilia of one hair cell become permanently bent. What will most likely happen
as a consequence?
A. A single pitch will be constantly perceived
B. A single pitch will no longer be perceivable
C. A or B depending on the hair cell's location
D. A or B depending on the bending's direction - Answer A or B depending on bending's
direction.
If a hair cell bends toward the kinocilium, K+ channels will open and the cell will _________.
A. Depolarize
B. Hyperpolarize
C. Stay at the same membrane potential - Answer A. Depolarize
If a hair cell bends toward the kinocilium...
A. It generates action potentials
B. It releases neurotransmitters
C. Both A and B
, D. Neither A nor B - Answer B. It releases neurotransmitters
During an auditory hallucination, sound is perceived without an auditory stimulus. Based on
what you learned about the brain last week, stimulation in which lobe of the brain would be
most likely to generate an auditory hallucination?
A. Frontal lobe
B. Occipital lobe
C. Parietal lobe
D. Temporal lobe - Answer D. Temporal lobe
You wake up in the middle of the night. As you look around the dark room, your pupils
________ to let in ________ light.
A. Constrict; more
B. Constrict; less
C. Dilate; more
D. Dilate; less - Answer C. Dilate; more
You turn on a light so you can get a glass of water. BEFORE you turn on the light, the Effector
Enzyme is activated.
A. True
B. False - Answer B. False
You turn on a light so you can get a glass of water. At the moment the light turns ON, the
concentration of cGMP inside your rods and cones ________.
A. Increases
B. Decreases
C. Does not change - Answer B. Decreases
You turn on a light so you can get a glass of water. At the moment the light turns ON, the
Sodium (Na+) enters the cell.
A. True
B. False - Answer B. False
You turn on a light so you can get a glass of water. At the moment the light turns ON, the
amount of neurotransmitters released by your rods and cones ________.
A. Increases
B. Decreases
