QUESTIONS

(a) The diagram shows some of the events which occur in a synapse after the arrival of an impulse at the presynaptic membrane.

(i) Put the events 1-6 on the diagram in the correct sequence.

(1)

 

(ii) Name the ions labeled A and B.

(2)

 

(iii) Name one transmitter molecule released by synaptic vesicles.

(1)

 

NEAB 1997
back  home