O-LevelBiologyEcology & Environment5090/11 · May/June 2018 · Q251 Mark

The diagram shows the percentages of injecting and non-injecting drug users who suffer from HIV/AIDS in a particular part of the world. What accounts for the difference between the two groups of drug users?

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ACondoms are used more often by injecting drug users.

BInjecting drugs is more common in areas of dense population.

CThe same needle may be used by several injecting drug users.

DThere are more injecting drug users than non-injecting drug users in this part of the world.

✓ Correct answer

C: The same needle may be used by several injecting drug users.

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 1, question 25.

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