Which two ions are most affected by aldosterone?

a. sodium and potassium

b. chloride and bicarbonate

c. calcium and phosphate

d. sodium and phosphate

Sodium and potassium.

Explanation:

Aldosterone hormone is produced by the adrenal cortex (zona glomerulosa) cells of the kidney. This is the main mineralocorticoid and the steroidal hormone.

Aldosterone is mainly involved in the regulation of sodium and potassium ions. The sodium ions are reabsorbed and potassium ions is secreted by the influence of aldosterone hormone.

Thus, the correct answer is option (a).