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O-LevelBiologyCoordination & Response5090/21 · May/June 2019 · Q511 Marks

The diagram shows the position of some organs in the human body. The organs may be found in either a male or a female, or in both. [Figure 5.1]

  1. (a)Use the letters shown to label, on the diagram, the organs that produce the following hormones: J - testosterone K - insulin L - progesterone M - follicle stimulating hormone (FSH).[4]
  2. (b)Explain how one of the hormones from (a) travels from the named organ that produces it to its named target organ.[4]
  3. (c)Explain how the hormones progesterone and luteinising hormone (LH) are linked in the menstrual cycle.[3]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Mark scheme

Marking points from the official mark scheme (May/June 2019). The mark or mark type is shown in brackets.

  1. [4] one mark for each correctly labelled organ:
  2. [4] J testis;
  3. [4] K pancreas;
  4. [4] L ovary;
  5. [4] M pituitary gland ;
  6. [4] (for testosterone or insulin or progesterone or FSH):
  7. [4] production organ + named hormone ;
  8. [4] in solution / dissolved;
  9. [4] in blood / plasma ;
  10. [4] tissue fluid;
  11. [4] target organ(s) + named for hormone selected ;
  12. [3] LH from the pituitary;
  13. [3] stimulates AW + ovary ;
  14. [3] egg release / ovulation ;
  15. [3] to produce progesterone ;
  16. [3] for approximately two weeks ;
  17. [3] (progesterone) to maintain spongy lining / wall of uterus /
  18. [3] inhibits FSH/LH / ovulation / egg formation AW ;

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About this question

Topic
Coordination & Response, O-Level Biology (syllabus 5090). Structured question, 11 marks.
Source
O-Level Biology, May/June 2019 Paper 2 Variant 1, question 5.

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