OCR GCSE Biology 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 1090

What is the typical duration of the menstrual cycle?

21 days

28 days

The typical duration of the menstrual cycle is about 28 days, although it can vary from person to person. This cycle begins on the first day of menstruation and ends just before the next period starts. The 28-day cycle is often regarded as the average or standard length, as it is seen in many women. However, cycles can range from 21 to 35 days and still be considered normal. Understanding the average duration helps in tracking ovulation and overall menstrual health, making it easier for individuals to recognize any abnormalities in their cycle.

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30 days

35 days

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