Workshop is –
Since you haven't provided the question and the options, I'll create a sample question and explanation for you.
**Question:** What is the primary function of the enzyme Acetylcholinesterase (AChE)?
A. To synthesize acetylcholine from choline
B. To hydrolyze acetylcholine into choline and acetic acid
C. To store acetylcholine in the synaptic cleft
D. To release acetylcholine from the nerve terminal
**Correct Answer:** B. To hydrolyze acetylcholine into choline and acetic acid
**Core Concept**
Acetylcholinesterase (AChE) is a crucial enzyme involved in the regulation of neurotransmission at cholinergic synapses. It catalyzes the hydrolysis of acetylcholine (ACh) into choline and acetic acid, thereby terminating the signal transmission.
**Why the Correct Answer is Right**
AChE plays a pivotal role in maintaining the balance of neurotransmitter levels in the synaptic cleft. By hydrolyzing ACh, AChE prevents excessive stimulation of postsynaptic receptors, allowing for proper signal transmission and preventing excitotoxicity. This process is essential for the proper functioning of the nervous system.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because AChE does not synthesize acetylcholine from choline; it breaks down acetylcholine into choline and acetic acid.
**Option C:** This option is incorrect because AChE is not involved in storing acetylcholine in the synaptic cleft; that function is carried out by vesicles.
**Option D:** This option is incorrect because AChE does not release acetylcholine from the nerve terminal; that function is carried out by the vesicular transporter.
**Clinical Pearl / High-Yield Fact**
AChE inhibitors, such as neostigmine, can be used to treat conditions like myasthenia gravis by increasing the concentration of acetylcholine in the synaptic cleft, thereby enhancing neuromuscular transmission.
**Correct Answer:** B. To hydrolyze acetylcholine into choline and acetic acid