Question 1
Which statement about HIV is correct?
- HIV is the same as AIDS
- HIV is a pathogen that causes an STI and may lead to AIDS
- HIV can only be passed on by sexual contact
- HIV is cured by taking a vaccine
Show mark scheme for question 1
Answer: B (1)
Question 2
(a) Describe a sexually transmitted infection (STI). [1] (b) State what HIV infection may lead to. [1]
Show mark scheme for question 2
- (a) an infection that is transmitted through sexual contact (1)
- (b) AIDS (1) allow acquired immune deficiency syndrome
Question 3
Describe three ways in which HIV can be transmitted. [3]
Show mark scheme for question 3
- sexual contact (with an infected person) (1)
- sharing needles / contact with infected blood (1) allow blood transfusion
- from an infected mother to her baby (across the placenta, at birth or in breast milk) (1)
Question 4
Explain how the spread of STIs can be controlled. [4]
Show mark scheme for question 4
- use of condoms (1) as a barrier to prevent body fluids passing between partners (1)
- do not share needles (1) so infected blood is not passed on (1)
- screening donated blood (1) so infected blood is not given to patients (1)
- testing and treating infected people / informing partners (1) allow antiretroviral drugs to reduce the amount of virus
- Max 4
Question 5
Which activity does not transmit HIV?
- Sharing needles
- Unprotected sexual contact
- Shaking hands
- Breast milk from an infected mother
Show mark scheme for question 5
Answer: C (shaking hands) (1)