Quelpr
2 marksNervous Co-ordination

CAPE Biology Unit 2 · May/June 2021 · Paper 2 · Question 2(a)(ii)

Figure 3 displays a light micrograph of a motor neuron from an Ox's spinal cord.

State the TWO main functions of synapses.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(i)In the space below, construct an annotated diagram of the motor neuron provided in Figure 3. Show the magnification of your drawing.[5 marks]
  2. 2(a)(iii)Outline the sequence of events that occurs when an action potential reaches a synapse.[6 marks]
  3. 2(b)(i)Differentiate between the 'source' and 'sink' in relation to phloem transport.[2 marks]
  4. 2(b)(ii)Explain how the sieve elements of the phloem are loaded with solutes against a concentration gradient.[3 marks]
  5. 2(c)Discuss the mass flow theory as a mechanism of sugar transport in the phloem. Your response must include the processes labelled 1-7 and the movement of…[12 marks]

More practice: the rest of this paper · more Nervous Co-ordination questions · all CAPE Biology Unit 2 past papers