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Chapter 10: Problem 6

Name four properties that you would expect a chemical substance to possess if it functions as a neurotransmitter at a synapse you are investigating.

Short Answer

Expert verified
Answer: To function as a neurotransmitter in a synapse, a chemical substance should be soluble in water, chemically stable, capable of binding to specific receptors on the postsynaptic neuron, and rapidly synthesized and released. These properties ensure effective communication between neurons and precise signal transmission.

Step by step solution

01

Property 1: Solubility in water

A neurotransmitter must be soluble in water because the synaptic cleft, where the neurotransmitters are released, is an aqueous environment. This property allows the neurotransmitter to easily diffuse across the cleft and interact with target receptors on the postsynaptic neuron.
02

Property 2: Chemical stability

A neurotransmitter should be chemically stable in order to maintain its structure and function within the synaptic cleft. If a neurotransmitter is unstable, it may degrade before it reaches its target or be unable to interact effectively with its receptor.
03

Property 3: Capability to bind to specific receptors

Neurotransmitters need to bind to specific receptors on the postsynaptic neuron in order to elicit a response. These receptors are usually protein molecules and have a specific binding site that only accepts neurotransmitters with a complementary structure. This selectivity ensures that the right neurotransmitter can activate or inhibit the desired response in the target neuron.
04

Property 4: Rapid synthesis and release

A neurotransmitter must be produced and released quickly by the presynaptic neuron in order to transmit signals efficiently. The synthesis and release of neurotransmitters can occur through various processes, such as enzymatic conversion of a precursor molecule or packaging into vesicles for storage until needed. Once the neurotransmitter is released into the synaptic cleft, it should be rapidly removed or metabolized (either by reuptake or enzyme degradation) to prevent continuous activation of the postsynaptic neuron and ensure precise communication.

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Most popular questions from this chapter

How do ionotropic glutamate receptors regulate the movement of \(\mathrm{Na}\) and \(\mathrm{Ca}\) ions into neurons? Why is Ca influx through glutamate receptor channels important?

The resting membrane potential is largely influenced by a. \(\mathrm{K}^{+}\)channels b. \(\mathrm{Na}^{+}\)channels c. none of the above d. all of the above

Name four properties that you would expect a chemical substance to possess if it functions as a neurotransmitter at a synapse you are investigating.

. How many pore-forming \(\mathbf{K}^{+}\)channel subunits assemble to form a functional channel? a. One b. Two c. Four d. None of the above

What is a "selectivity filter"' of an ion channel? Do all channels contain a selectivity filter?
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