What do proteins do for the cell?

Answer 1

There are many uses for proteins in a cell membrane but the most common ones are:

1. Facilitated diffusion- a protein acts almost like a channel to allow molecules that cannot fit across the phospholipid bilayer to diffuse into/out of the cell

2. Active transport- proteins are used to move particles across the membrane from low to high concentration, using energy.

3. As receptor molecules which take signals from things like hormones.

Answer 2

Proteins have many important functions in a cell, including serving as structural components, enzymes that catalyze reactions, transportation of molecules within the cell, cell signaling, and regulation of gene expression. They are essential for the proper functioning and maintenance of the cell.

Answer 3

Proteins are building blocks of the cells. It is needed to build new cells.

Answer 4

They help the cell membrane