O-LevelBiologyEcology & Environment5090/22 · Oct/Nov 2020 · Q910 Marks
Answer either Question 8 or Question 9.
- (a)Explain how surgery may be used as an effective method of birth control in: a man a woman.[5]
- (b)Surgical methods of birth control do not prevent the spread of pathogens, such as HIV, that cause sexually transmitted diseases. Describe the methods by which the spread of HIV may be controlled.[5]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.
- [1] cut / clipped / tied / ligated / cauterised / burnt ;
- [1] no + fertilisation / fusion of gametes or named ;
- [1] sperm duct / vas deferens ;
- [1] no sperm + released / in semen ;
- [1] fallopian tube / oviduct;
- [1] egg AW does not reach + uterus / womb ;
- [1] removal of uterus ;
- [1] drugs / anti(retro)virals;
- [1] education ;
- [1] one partner / no prostitute + sex / intercourse ;
- [1] abstinence ;
- [1] condom / femidom ;
- [1] testing / contact tracing / screening blood ;
- [1] sterilise / not share + needles / razors / toothbrushes / surgical tools ;
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