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

Control and coordination in mammals — practice question

(a)[7]

Describe how sodium ions function in selective reabsorption in the nephron and how calcium ions function in a cholinergic synapse.

(b)[8]

Compare how the endocrine and nervous systems contribute to control and co-ordination in mammals.

Worked solution & mark scheme

This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$Na^+$ is pumped out of PCT cells by active transport” …

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