Chapter 53 The Chemical Senses—Taste and Smell

Chapter 53  The Chemical Senses—Taste and Smell

Complete Chapter Questions And Answers
 

Sample Questions

1. Glutamate is thought to be the primary source of stimulation of which of the following taste sensations?
A. Umami
B. Sour
C. Salty
D. Bitter

ANS: A

2. Which of the following occurs during olfactory signal transduction?
A. The oderant molecule binds to the mucus layer covering the olfactory cilia which results in activation of voltage gated potassium channels
B. The oderant molecule binds directly to an oderant gated ion channel
C. The oderant molecule binds to an oderant binding protein which results in the activation of a G protein that induces the formation of cGMP which opens an ion channel
D. The oderant molecule binds to an oderant binding protein which results in the activation of a G protein that induces the formation of cAMP which opens an ion channel

ANS: D

3. Damage to which of these cranial nerves would impair the bitter taste sensation?
A. The hypoglossal nerve
B. The facial nerve
C. The glossopharyngeal nerve
D. The trigeminal nerve

ANS: C

4. The sour taste sensation is the result of stimulation of the appropriate taste receptor by?
A. Long chain organic substances containing nitrogen
B. Ionized salts
C. Hydrogen ions
D. Complex organic molecules

ANS: C

5. The bitter taste sensation is the result of stimulation of the appropriate taste receptor by?
A. Long chain organic substances containing nitrogen
B. Ionized salts
C. Hydrogen ions
D. Complex organic molecules

ANS: A