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 refers to the movement of solute molecules along with the flow of solvent (usually water) through aqueous pores or channels present in biological membranes. This mechanism is also known as pore transport or bulk flow. Key features of convective (pore) transport: - Occurs through aqueous pores or channels in the membrane.
- Involves small, water-soluble, and low molecular weight molecules (e.g., urea, electrolytes).
- No energy requirement—it is a type of passive transport driven by pressure gradients or bulk fluid movement.
- Common in capillaries and renal glomerular filtration processes.
Let’s assess the options: - Endocytosis involves vesicle formation and is an active, energy-dependent process.
- Active transport uses energy (ATP) to move substances against a concentration gradient.
- Passive transport includes diffusion but not necessarily pore-mediated transport.
- Pore transport is the correct equivalent term for convective transport.
Hence, the common name for convective transport is pore transport.