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3 marksImmunology

CAPE Biology Unit 2 · May/June 2025 · Paper 2 · Question 3(a)(ii)

Antibodies bind foreign matters and activate the immune system. Figure 4 shows the molecular structure of a typical antibody molecule.

State ONE function of EACH of the structures labelled X-Z in Figure 4.

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Other parts of this question

  1. 3(a)(i)Identify EACH of the structures labelled X-Z in Figure 4.[3 marks]
  2. 3(a)(iii)Explain the significance of the structure labelled W in Figure 4 to the immune response.[3 marks]
  3. 3(a)(iv)Using Figure 5, describe how Mabthera/Rituximab is used to treat non-Hodgkin lymphoma.[4 marks]
  4. 3(b)(i)Construct ONE table to represent the data shown in Figures 6 and 7.[5 marks]
  5. 3(b)(ii)State TWO conclusions which can be made from the data given in Figures 6 and 7 on page 24.[2 marks]
  6. 3(b)(iii)Suggest ONE other strategy that can be used to control dengue transmission in the context of the Caribbean. Give a scientific reason why the strategy suggested…[2 marks]
  7. 3(c)Using the data in Table 3 and the information provided, discuss the factors that may affect the distribution of diabetes and cancer in the Caribbean. You MUST…[8 marks]

More practice: the rest of this paper · more Immunology questions · all CAPE Biology Unit 2 past papers