One of the characteristics of botulinum toxin (the cause of 'botulism') is a very specific protease activity, i.e., the toxin can cleave (cut), and thereby render nonfunctional, a SNARE protein associated with neurotransmitter-containing synaptic vesicles found in certain nerve terminals. Which of the following is the likely effect of this toxin on fusion of synaptic vesicles with the plasma membrane (and subsequent neurotransmitter release)? a.) An increase in fusion events b.) a decrease in fusion events c.) no effect on fusion events
One of the characteristics of botulinum toxin (the cause of 'botulism') is a very specific protease activity, i.e., the toxin can cleave (cut), and thereby render nonfunctional, a SNARE protein associated with neurotransmitter-containing synaptic vesicles found in certain nerve terminals. Which of the following is the likely effect of this toxin on fusion of synaptic vesicles with the plasma membrane (and subsequent neurotransmitter release)? a.) An increase in fusion events b.) a decrease in fusion events c.) no effect on fusion events
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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One of the characteristics of botulinum toxin (the cause of 'botulism') is a very specific protease activity, i.e., the toxin can cleave (cut), and thereby render nonfunctional, a SNARE protein associated with neurotransmitter-containing synaptic vesicles found in certain nerve terminals. Which of the following is the likely effect of this toxin on fusion of synaptic vesicles with the plasma membrane (and subsequent neurotransmitter release)?
a.) An increase in fusion events
b.) a decrease in fusion events
c.) no effect on fusion events
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Neurotransmitters
A chemical that secreted by the ends of nerve fiber into the synaptic cleft.
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