A drug that inactivates acetylcholinesterase a. stops the release of ACh from presynaptic endings. b. prevents the attachment of ACh to its receptor. c. increases the ability of ACh to stimulate postsynaptic cells. d. All of these are correct.
Added by Jason J.
Step 1
Step 1: Acetylcholinesterase is an enzyme found in the synaptic cleft that degrades acetylcholine into acetate and choline. Show more…
Show all steps
Your feedback will help us improve your experience
Keemin Lee and 83 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Inhibition of acetylcholinesterase by poisoning blocks neurotransmission at the neuromuscular junction because (a) $\mathrm{ACh}$ is no longer released by the presynaptic terminal, (b) ACh synthesis in the presynaptic terminal is blocked, (c) $\mathrm{ACh}$ is not degraded, so prolonged depolarization is enforced on the postsynaptic cell, (d) ACh is blocked from attaching to the postsynaptic ACh receptors.
Which of the following is/are mechanism(s) to end neural transmission at the neuromuscular junction? Select all the correct answers. a. ACh is taken up by the axon terminal via endocytosis. b. ACh diffuses away from the synaptic cleft. c. ACh binds to ACh receptors. d. ACh is broken down into acetic acid and choline by the enzyme acetylcholinesterase (AChE).
Adi S.
Anesthetics block pain by blocking the transmission of nerve signals. Which of these three chemicals might work as anesthetics? (Choose all that apply and explain your selections.) a. a chemical that prevents the opening of voltage-gated $\mathrm{Na}^{+}$ channels in membranes b. a chemical that inhibits the enzymes that degrade neurotransmitters c. a chemical that blocks neurotransmitter receptors
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD