Which of the following statements correctly distinguishes transporters (carrier proteins) from porins and ion channels? OA. Transporters exhibit a conformational change when substrate binds but porins and ion channels do not. OB. Porins and ion channels have a permanent hole that passes from one side of the membrane to the other through which solutes pass whereas transporters do not. OC. Porins and ion channels mediate passive transport, while transporters are associated with both passive and active transport. Both A and B are correct. All of the above are correct.
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This conformational change allows the substrate to be transported across the membrane. On the other hand, porins and ion channels do not exhibit a conformational change when allowing solutes to pass through. Show more…
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