Biology 0610 · IGCSE · Coordination and response

Coordination and response — practice question

Four processes take place as impulses pass across a synapse. P: neurotransmitter diffuses across the synaptic gap Q: neurotransmitter attaches to receptors R: impulse triggers vesicles S: release of neurotransmitter What is the correct order of these processes?

  • AP → R → Q → S
  • BR → P → Q → S
  • CR → S → P → Q
  • DS → Q → R → P

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