Which of the following is(are) true about postsynaptic potentials (PSPs)?
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A neurotransmitter must be released into the synaptic cleft.; |
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A neurotransmitter must bind or fit into a receptor site.; |
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A postsynaptic potential is a graded response.; |
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It affects the probability of a neuronal impulse based on its size and polarity.; |
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All of the above alternatives are correct; |
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