CAIE IGCSE Biology 14.1.10 Synapses Ensure That Impulses Travel Questions

Practise explaining how one-sided neurotransmitter release and receptors on the opposite side make transmission across a synapse one-way.

Exam points

state that synapses ensure impulses pass from one neurone to the next in one direction
link neurotransmitter release to vesicles located in the presynaptic ending
explain that complementary receptors occur only on the postsynaptic membrane

[Maximum number: 2]

Heroin is a drug that acts on the nervous system.

Suggest how the structure of a synapse ensures that impulses travel in one direction.

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