There are several toxins that interfere with synaptic transmission. Botulism toxin, for example, interferes with the fusion of acetylcholine-containing vesicles with the membrane of the axon bulb. This would result in which one of the following?
A) blockage of Ca2+ diffusion into the axon
B) slow diffusion of the neurotransmitter across the synaptic cleft
C) inability of neurotransmitter to bind the receptor on the postsynaptic membrane
D) blocking of neurotransmitter release by the presynaptic membrane
E) hyperpolarization of the postsynaptic membrane
D
You might also like to view...
Bone mass typically increases until we turn
a. 10. b. 15. c. 25. d. 35. e. 45
The modern lifestyle of humans has generated an apparent increase in the frequency of some conditions, as compared to our hunter-gatherer ancestors. Which of the following is NOT one of them?
A) breast cancer B) myopia C) obesity D) lactose intolerance E) None of these.
The total (gross) number of ATPs produced from glycolysis is estimated to be
A. thirty-six. B. thirty-four. C. two. D. four.
In the procedure known as gel electrophoresis, DNA fragments are separated by their:
a. color b. size c. GC content d. pH tolerance