What is the function of proteins in the cell membrane

Asked by admin @ 28/10/2021 in Biology viewed by 320 People

What functions do proteins perform in the cell membrane?

A) they help transport some substances through the membrane.
B) they use DNA coding to make molecules of RNA.
C) they provide basic structure for the cell membrane.
D) they break down macromolecules into their monomer components .

Answered by admin @ 28/10/2021

Answer:

A) they help transport some substances through the membrane.

Explanation:

The membrane proteins that span the bilayer of phospholipids help in the transport of polar, large and charged substances across the membrane. The nonpolar core of the membrane does not allow these charged and polar substances to pass through. Proteins serving as channels form pores to allow movement of the specific substances.

On the other hand, carrier transport proteins of the membrane bind to the substances present at one side of the membrane and deliver them to the opposite side.

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