SAT Subject Biology Practice Question 309: Answer and Explanation

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Question: 309

19.

The hormone labeled X in the diagram is often used in over-the-counter diagnostic tests to determine when ovulation has occurred. This hormone is

A. estrogen
B. progesterone
C. FSH
D. LH
E. testosterone

Correct Answer: D

Explanation:

D A surge in LH is what causes ovulation and is measured in the ovulation prediction kits. Estrogen and progesterone affect the uterus, not the ovary, and FSH causes development of a follicle (A, B, and C are wrong). Testosterone is a male hormone (E is wrong).

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