AP Biology : Reproductive System

Study concepts, example questions & explanations for AP Biology

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Example Questions

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Example Question #1363 : Ap Biology

Which of the following correctly identifies the typical—average—length of a single female menstrual cycle?

Possible Answers:

Correct answer:

Explanation:

One average, one menstrual cycle typically lasts for about 28 days; however, this time length can range anywhere from 21 to 35 days depending on the individual.

Example Question #171 : Reproductive System

What hormone causes ovulation to occur during the menstrual cycle?

Possible Answers:

Thyroid-stimulating hormone

Follicle-stimulating hormone

Prolactin

Luteinizing hormone

Growth hormone

Correct answer:

Luteinizing hormone

Explanation:

An increase in estrogen causes an increase in the luteinizing hormone. It is the luteinizing hormone that causes ovulation. Ovulation is the process of releasing an ovum. 

Growth hormone creates growth in the body. Follicle-stimulating hormone helps follicles mature, and promotes spermatogenesis in males. Prolactin causes the mammary glands to create milk. Thyroid-stimulating hormone helps release thyroxine and triiodothyronine (thyroid hormones).

Example Question #172 : Reproductive System

Which of the following is true regarding the association between intercurrent diseases and pregnancy?

Possible Answers:

They are not pre-existing

The diseases can worsen as a result of the pregnancy

None of these

Drugs taken to treat the disease have no impact on the fetus

These diseases do not impact the pregnancy

Correct answer:

The diseases can worsen as a result of the pregnancy

Explanation:

Intercurrent diseases are diseases that are not related to being pregnant (they were pre-existing) but may worsen during pregnancy. These diseases pose a risk to the developing fetus and special attention needs to be given to the drugs taken to treat the exiting illness because they may negatively impact the fetus. In the case of infections, there is a risk of vertical transmission to the fetus.

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