Which of the following is a characteristic for facilitated diffusion of neutral metabolites?

Question

Quizplus · Accepted Answer

Facilitated diffusion of neutral metabolites shows an upper limit in the transport velocity as the metabolite concentration increases. This is due to the saturation of the transporter molecules present in the membrane, which results in a maximum transport rate. Lineweaver-Burk plots which pass through the origin are characteristic of simple diffusion, not facilitated diffusion. A linear plot when velocity is plotted versus the concentration of the metabolite is also not specific to facilitated diffusion and can be observed in simple diffusion as well. Facilitated diffusion cannot move molecules against the thermodynamically favored direction, so D is incorrect.

Which of the Following Is a Characteristic for Facilitated Diffusion