The lock and key analogy relates to the
a. degradation of neurotransmitters by enzymes.
b. activation of the nerve impulse.
c. reuptake of neurotransmitters.
d. action of neurotransmitters on receptor sites.
Question 2
Stan, an aging Hollywood actor, uses Botox treatments to reduce wrinkling. These treatments work, because Botox
a. blocks nicotinic receptors on muscle fibers, reducing their rate of contraction.
b. breaks down acetylcholinesteras e (AChE) in the synaptic gap, leading to stronger contraction of facial muscles.
c. reduces the release of acetylcholine (ACh) and which paralyzes facial muscles.
d. increases the release of acetylcholine (ACh) and the subsequent contraction of facial muscles.