O-LevelBiologyEcology & Environment5090/12 · May/June 2022 · Q351 Mark

Some statements about the human immunodeficiency virus (HIV) are listed. 1 Its spread can be reduced by using condoms. 2 It can pass across the placenta. 3 It can be spread by coughing or sneezing. 4 It is the same as AIDS. 5 It is transmitted in blood and semen. 6 Its spread can be reduced by screening donated blood. Which statements about HIV are not correct?

A1, 3 and 6

B2, 4 and 5

C2 and 3

D3 and 4

✓ Correct answer

D: 3 and 4

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2022 Paper 1 Variant 2, question 35.

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