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What is the major difference between Facilitated diffusion and Passive diffusion?(a) Carrier-mediated transport(b) Downhill transport(c) Energy is used(d) Inhibition by metabolic poisonsI have been asked this question in a national level competition.I'm obligated to ask this question of Mechanisms of Drug Absorption topic in division Absorption of Drugs of Drug Biotechnology

Answer»

Right CHOICE is (a) Carrier-mediated TRANSPORT

For explanation: Facilitated diffusion is a carrier-mediated transport which OPERATES down the concentration gradient. It is FASTER than passive diffusion because of the involvement of Carriers. The DRIVING force is the concentration gradient.



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