CAIE IGCSE Biology 16.6.3 Hiv Infection May Lead to Aids Questions

Practise stating the relationship between HIV infection and AIDS accurately without treating progression as immediate or certain.

Exam points

state that HIV infection may lead to AIDS

[Maximum number: 4]

Fig. 4.1 is a diagram of a virus.

Fig. 4.1

The human immunodeficiency virus (HIV) infects and destroys lymphocytes.

The number of lymphocytes in the blood of a person infected with HIV was measured over a period of 84 months.

The results are shown in Fig. 4.2.
number of lymphocytes per $\mathrm{mm}^{3}$ of blood

Fig. 4.2

Outline the consequences of the changes in the number of lymphocytes for the health of the person infected with HIV.

All question bank results loaded

CAIE IGCSE Biology 16.6.3 Hiv Infection May Lead to Aids Questions question 1