Question

In distal convoluted tubule of the nephrons.

• A. Na reabsorption requires energy
• B. Secretion of K ions does not require energy
• C. Water reabsorption requires energy
• D. Ammonia is secreted

Answer 1

The correct option is A Na reabsorption requires energy

1. 5 % Sodium is reabsorped in DCT through the active process.

2. Pottasium is actively secreted in the DCT.

3. Water is reabsorbed in DCT through osmosis only under the influence of ADH.

4. Ammonium ion is secreted into the DCT through diffusion.

So, the correct option is 'Na reabsorption requires energy'.