Question

Reabsorption of glucose from the glomerular filtrate in the kidney tubule is carried out by:

• A. active transport
• B. Brownian movement
• C. Diffusion
• D. osmosis

Answer 1

The correct option is A

active transport

.The correct option is A

Explanation of the correct option:

1. Complete reabsorption of glucose takes place by simple cuboidal epithelium with a brush border lined cells of the proximal convoluted tubule by an active transport process.
2. It requires energy as it takes place against the concentration gradient.
3. It is done with the help of several membrane transporters.

Explanation of the incorrect option:

Option B:

1. Brownian movement is the ceaseless, random motion of colloidal particles in all directions over a large area.
2. The colloidal particles are constantly bombarded with the molecules of the dispersion medium.
3. The colloidal particles acquire kinetic energy equal to that of the molecules of the medium.

Option C:

The phenomenon of the transport of molecules from higher concentration to lower concentration is called diffusion.

Option D:

Osmosis is the process of movement of molecules from the region of higher concentration to the lower concentration through a semipermeable membrane.

Final answer: Reabsorption of glucose from the glomerular filtrate in the kidney tubule is carried out by active transport.