Question

Common name of convective transport

• A. Endocytosis
• B. Active transport
• C. Passive transport
• D. Pore transport

Hint:

Convective or pore transport is important in drug absorption of small hydrophilic molecules, especially across leaky membranes like those in the renal glomerulus or small intestine.

Answer 1

The Correct Option is D

Convective transport is solute movement that piggybacks on the bulk flow of solvent through small channels in a membrane, rather than the solute diffusing on its own.

1. Endocytosis: Involves the membrane wrapping around and internalizing material, a completely different, energy-dependent process.
2. Active transport: Relies on carrier proteins and ATP to move solutes against a gradient, not on bulk fluid flow.
3. Passive transport: A general category for gradient-driven movement, without specifically naming the pore-and-bulk-flow mechanism being asked about.
4. Pore transport: Names exactly what happens when solutes are swept through aqueous pores along with the flowing solvent, which is the common alternate name for convective transport.

Pore transport is the term that specifically matches the convective mechanism described.

So the correct answer is Pore transport.