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

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What is one main feature of the combined pill?

Taken continuously without breaks
Taken in a 21-day cycle with 7 days no-pill
Contains only estrogen
Requires weekly administration

The correct answer is: Taken in a 21-day cycle with 7 days no-pill

The main feature of the combined pill is that it is taken in a 21-day cycle, followed by a 7-day break during which no pill is taken. This regimen allows for hormone levels to be managed effectively, providing the benefits of contraception while also allowing for a scheduled withdrawal bleed that mimics a natural menstrual cycle. During the 21 days, the pill releases a mixture of estrogen and progestin hormones to prevent ovulation and regulate the menstrual cycle. After the three weeks of hormone intake, the 7-day interval without pills gives the body a break from hormones, which is similar to a natural period, making this method both effective and in line with most users' expectations regarding their menstrual health.