Question

All of the following processes are involved in tubular reabsorption EXCEPT

o osmosis
o diffusion.
o filtration.
o active transport
o All of these choices are part of tubular reabsorption.

Answer 1

Tubular reabsorption is the process by which water and solutes filtered in the glomerulus are reabsorbed into the bloodstream. It occurs in the proximal convoluted tubule and involves the reabsorption of nutrients and water by active and passive transport.

Step-by-step explanation:

Tubular reabsorption is a process in the renal tubules where water and solutes that were filtered out in the glomerulus are reabsorbed back into the bloodstream. This process occurs in the proximal convoluted tubule (PCT) of the nephron.

During tubular reabsorption, almost all nutrients are reabsorbed either by passive or active transport. Water follows the reabsorption of sodium (Na+) by osmosis, to equalize the osmotic pressure.

The exceptions in the provided options are osmosis, diffusion, and filtration. Osmosis and diffusion are involved in tubular reabsorption, and filtration is the process that occurs in the glomerulus to produce the filtrate.