Biology 0610 · IGCSE · Sex hormones in humans

Sex hormones in humans — practice question

LH and oestrogen concentrations are recorded over part of a menstrual cycle. On what day does ovulation take place?

  • Aday 7 with LH 10 and oestrogen 30
  • Bday 10 with LH 12 and oestrogen 135
  • Cday 13 with LH 120 and oestrogen 130
  • Dday 16 with LH 20 and oestrogen 25

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