Question

4.

An increase in aldosterone will cause ...

Select one:

a. an increase in sodium reabsorption

b. an increase in blood pressure

c. an increase in angiotensin II

d. an increase in calcium reabsorption

e. an increase in water excretion

5.

An individual who is chromosomally XY, but does not have the SRY gene, will have the following phenotype (morphology):

Select one:

a. no gonads and female-like external genitalia

b. no Mullerian duct differentiation

c. ovaries and female-like internal and external genitalia

d. ovaries and male-like internal and external genitalia

e. testes and male-like internal and external genitalia

Answer 1

Answer 4: Aldosterone a hormone of renin angiotensin aldosterone system may cause increase in salt and water reabsorption and thus restore the blood pressure.

Angiotensin II stimulates secretion of Aldosterone.

Calcium reabsorption is independent of Aldosterone increase.

So the correct answer is 1 (an increase in sodium reabsorption).

Answer 5: SRY genes are responsible for the development of male gonads and prevents female reproductive structure formation.

An individual who is chromosomally XY, but does not have the SRY gene will show characteristics of Gonadal Agenesis. In this syndrome the subject would be a female with no gonads due to absence of sexual differentiation in absence of SRY genes, but presence of external genitalia. So the answer would be 1.