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2 marksAspects of Biochemistry

CAPE Biology Unit 1 · 2014 · Paper 2 · Question 1(a)(iv)

Using haemoglobin as an example, explain EACH of the following levels of structural organization of proteins:

Quaternary structure

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Other parts of this question

  1. 1(a)(i)Primary structure[1 mark]
  2. 1(a)(ii)Secondary structure[2 marks]
  3. 1(a)(iii)Tertiary structure[2 marks]
  4. 1(b)With reference to its protein structure, explain how the haemoglobin molecule functions in its essential role.[3 marks]
  5. 1(c)(i)Identify the organelles labelled A, B and C in Figure 1. A: B: C:[3 marks]
  6. 1(c)(ii)Calculate the actual maximum length of the organelle labelled X to the nearest micrometre (µm). Show your working.[2 marks]

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