QAPhysics › Which of the following statements about a chemical synapse is true?
Q

Which of the following statements about a chemical synapse is true?

a) Calcium ions relay the signal generated by an action potential in one neuron across the gap to a second neuron.

b) It allows signal transmission from one neuron to another through a wave of electrochemical change.

c) Signal transmission occurs by diffusion of a compound called a neurotransmitter through the intercellular space between neurons.

d) Its presynaptic component undergoes chemical breakdown in response to a signal, and the breakdown product carries the signal to the postsynaptic component.

A

Answer: c) Signal transmission occurs by diffusion of a compound called a neurotransmitter through the intercellular space between neurons

A chemical synapse refers to a gap between two neurons, through which electrical signals must pass.

Neurotransmitters are mobile compounds that are responsible for passing signals across neurons, through a synapse. They pass through the intercellular spaces between the neurons and form a bridge of some sort between the two neurons separated by a gap. The signals that need to be sent across then have easy access to the next or target neuron.

3 years ago
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