Biology 9700 · AS & A Level · Control and coordination in mammals

Control and coordination in mammals — practice question

(a)[4]

Explain why the myelin sheath is important in the transmission of action potentials.

(b)[5]

Acetylcholine functions as a neurotransmitter. Describe the events that occur at a synapse that lead to the release of acetylcholine.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Myelin acts as an insulator” …