Which enzyme is activated by G protein transducin when rhodopsin is excited?
A. (A) phosphodiesterase
B. (B) guanylate cyclase
C. (C) phospholipase
D. (D) adenylate cyclase
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Which structure is a part of the outer ear?
A. (A) cochlea
B. (B) round window
C. (C) auricle
D. (D) vestibular nerve
Where do inner and outer hair cells reside on?
A. (A) auricle
B. (B) organ of Corti
C. (C) cochlear nerve
D. (D) tympanum
How do hair cells adapt to sustained stimulation?
A. (A) by opening the channel with gating spring
B. (B) by sliding down the tip links
C. (C) by cutting off the links of gating spring
D. (D) all of above
Which is correct about voltage-induced motion of the outer hair cell?
A. (A) depolarization makes it longer
B. (B) hyperpolarization makes it longer
C. (C) repolarization makes it shorter
D. (D) it is a symmetrical response
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