Question

The female sex hormone responsible for developing secondary female characteristics and menstrual cycle control is:

• A. Testosterone
• B. Estradiol
• C. Insulin
• D. Thyroxine

Hint:

Estradiol is key for secondary sexual characteristics and menstrual cycle regulation.

Answer 1

The Correct Option is B

The question asks us to identify the female sex hormone responsible for developing secondary female characteristics and controlling the menstrual cycle. Let's evaluate each option to find the correct answer:

1. Testosterone: This is the primary male sex hormone, responsible for the development of male secondary sexual characteristics. Although it is present in females in smaller amounts, it does not control female characteristics or the menstrual cycle. Thus, this is not the correct answer.
2. Estradiol: Estradiol is a form of estrogen, which is a primary female sex hormone. It plays a crucial role in developing secondary female sexual characteristics such as breast development and the regulation of the menstrual cycle. This makes it the correct answer.
3. Insulin: Insulin is a hormone produced by the pancreas, essential for regulating blood sugar levels. It is not related to sex characteristics or menstrual cycle regulation. Therefore, this is not the correct answer.
4. Thyroxine: This hormone is produced by the thyroid gland and is involved in regulating metabolism. It is not responsible for secondary sexual characteristics or the menstrual cycle. Thus, this is not the correct answer.

Therefore, the correct answer is Estradiol.