Biology 5090 · O Level · Sexual reproduction in humans

Sexual reproduction in humans — practice question

The diagram illustrates how the thickness of the uterus lining changes over one menstrual cycle. At what point would progesterone and LH levels be at their highest?

  • Aprogesterone: between days 12 and 16; LH: between days 25 and 28
  • Bprogesterone: between days 19 and 23; LH: on day 14
  • Cprogesterone: on day 5; LH: between days 1 and 5
  • Dprogesterone: on day 13; LH: on day 10

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