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

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What role do FSH and LH injections have for women with low FSH levels?

Prevent ovulation and increase progesterone levels
Stimulate ovulation
Promote egg freezing
Increase the lining of the uterus

The correct answer is: Stimulate ovulation

In women with low levels of Follicle Stimulating Hormone (FSH), injections of FSH and Luteinizing Hormone (LH) are used primarily to stimulate ovulation. FSH is crucial for the growth and maturation of ovarian follicles, which contain the eggs. When FSH is administered, it encourages the ovaries to produce and mature follicles, leading to the release of eggs during ovulation. LH also plays a significant role in this process by triggering ovulation itself once the follicles are mature. The combined effect of these hormones essentially prepares the body for the ovulation process, making it more likely for women who struggle with fertility due to inadequate hormone levels to conceive. The other options do not align with the primary function of FSH and LH injections. While progesterone levels are important for maintaining pregnancy, they are not directly increased by these injections. Egg freezing is a separate process that involves the retrieval of eggs for preservation, which does not necessarily relate to the function of these hormone injections. Lastly, while some hormonal treatments can affect the uterine lining, the main purpose of FSH and LH injections in this context is specifically to induce ovulation.