For the next few questions, select from: a) Testosterone b) Estradiol c) Estriol

Question

For the next few questions, select from: a) Testosterone b) Estradiol c) Estriol d) Estrone e) Dihydrotestosterone ab) 5-a-reductase ac) Aromatase 77) A deficiency in the production of this enzyme leads to normal development of the male internal genitalia, but poorly developed external genitalia. 78) A lack of receptors for will result in an individual that develops largely as a female, but will have testes that remain inside the abdomen. 79) This estrogen is produced in women that are not pregnant and have not yet reached menopause. 80) converts androgens into estrogens

Explanation / Answer

Ans.77. The choice is (ab)

5 - alpha - reductase

5 alpha reductase converts testosterone into dihydrotestosterone. In absence of 5 alpha reductase, dihydrotestosterone is not getting produced due to which there is poorly developed external genitalia.

Ans.78. The choice is (e).

Dihydrotestosterone.

Testosteronen gets converted to dihydrotestosterone and in the absence of receptors of dihydrotestosterone, dihydrotestosterone is not able to bind to receptors and is not able to show its action and hence individual develops largely as female.

Ans.79. The choice is (b).

Estradiol.

During pregnancy estriol is dominant and during menopause estrone is dominant.

Ans.80. The choice is (ac).

Aromatase.

Aromatase converts Androgens(testosterone) to estrogens.

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