3
lesson pretestMultiple Choice

Pretest

Question 3 • Biology

Examine the words. impulse, presynaptic cell, neurotransmitters, receptors, postsynaptic cell What idea can be described using all the words listed?

Answer
A
the transfer of information from one neuron to another
B
the difference between the somatic and autonomic nervous systems
C
the difference between the central and peripheral nervous systems
D
the flow of information within a neuron

Explanation

A nerve impulse reaching the presynaptic cell causes neurotransmitters to be released. They cross the gap between cells and bind to receptors on the postsynaptic cell, passing the signal to another neuron. Thus, these words describe the transfer of information from one neuron to another, not information flowing within a single neuron.

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