CAIE IGCSE Biology 14.1.10 One-way Transmission at Synapses
Practise explaining how the arrangement of vesicles and receptor molecules makes synaptic transmission one-way.
- Syllabus
- 2026–2028
- Course
- Biology 0610
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
14.1.10—Synapses ensure that impulses travel question 1
[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.
neurotransmitter released / vesicles, on one side of synapse ; receptors / described, only found on the opposite side of synapse ;
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