OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

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At what point in the menstrual cycle does ovulation occur?

Day 1
Day 7
Day 14
Day 21

The correct answer is: Day 14

Ovulation is a key event in the menstrual cycle, marking the release of an egg from the ovary, which is crucial for reproduction. This typically occurs around the midpoint of the cycle. If we consider a standard menstrual cycle length of about 28 days, ovulation usually takes place approximately 14 days after the first day of menstruation. This timing can vary slightly among individuals, but day 14 is generally accepted as the most common point for ovulation in a typical cycle. This is when the luteinizing hormone (LH) surges, triggering the release of the egg, making it the ideal time for fertilization if sperm is present. Understanding the timing of ovulation is essential for those trying to conceive or those monitoring their menstrual cycles for other health reasons.