Are carrier proteins required for active transport?

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Solution

Active transport:
Active transport is the movement of a chemical substance by the expenditure of energy in concentration or in electric potential across the plasma membrane.
Active transport requires specialized carrier proteins and the expenditure of cellular energy.
Carrier proteins allow chemicals to cross membranes against a concentration gradient or when the phospholipid bilayer of the membrane is impermeable to a chemical.

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Similar questions

Consider the following statements and choose the correct answer.

I. Carrier proteins are needed by both facilitated diffusion and active transport and are sensitive to inhibitors that react with the protein.

II. Different types of proteins present in the membrane play a major role in both active as well as passive transport.

III. The carrier proteins needed by facilitated and active transport are specific.

IV. There is no need of energy to pump molecule against a concentration gradient in active transport.

V. Transport rate reaches the saturation point when all the active proteins are used.

What kind of protein is required for active transport?

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