What is the role of protein pumps in active transport?

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Solution

Active Transport:
Protein pumps are transmembrane proteins, which are involved in the active transport of ions across the membrane against the concentration gradient.
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient.
Active transport requires cellular energy to achieve this movement which is derived from ATP hydrolysis.
The binding of a molecule brings about conformational changes in the transmembrane carrier protein and it is then released on the other side of the membrane.

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Describethe role played by protein pumps during active transport in plants.

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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