Biology 0610 · IGCSE · Sex hormones in humans

Sex hormones in humans — practice question

The concentrations of LH and oestrogen are monitored over part of a menstrual cycle. On which day does ovulation occur?

  • AMarch 25th; LH $= 10$ (arbitrary units); oestrogen $= 30$ (arbitrary units)
  • BMarch 28th; LH $= 12$ (arbitrary units); oestrogen $= 135$ (arbitrary units)
  • CMarch 31st; LH $= 120$ (arbitrary units); oestrogen $= 130$ (arbitrary units)
  • DApril 3rd; LH $= 20$ (arbitrary units); oestrogen $= 25$ (arbitrary units)

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