NEET Biology question

Not in NEET syllabus

Which of the following is not correct regarding carrier molecules involved in facilitated diffusion?

(A)They are responsible for concentrating solute molecules on one side of the membraneCorrect
(B)They are responsible for increasing the speed of transport across a membrane
(C)They may undergo conformational change upon binding of solutes
(D)They possess specific binding sites for the molecules to be transported

Answer: (A)

Solution

Facilitated diffusion is a passive process — carrier proteins speed up transport along the existing concentration gradient, undergo conformational changes on binding their specific

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Question ID VK-127642