What role does a cell membrane play in a cell?

Answer 1

it controls what enters and exits the cell

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It holds the cell contents together and forms a barrier between these contents and what is outside the cell. It also has structures in it that allow for the controlled transport of specific substance into and out of the cell.

Answer 2

Basically to keep the insides in. But it is not just a passive skin. it is actually a fluid bilayer of lipids with hydrophilic ends on the outside. This membrane is thus active, being penetrated by protein complexes that determine what substances are allowed in and what is allowed out.

Also, the outer layer is occupied by glycoproteins that have attached sugars, and these act as a kind of fingerprint of the cell, allowing it to be recognised by other cells and important compounds like hormones. It lets some molecules in and keeps some out For example, the cell membranes of the villi in the small intestine let nutrient molecules into the bloodstream, but leave the large ones out.

Answer 3

The cell membrane acts as a barrier, regulating the passage of materials in and out of the cell. It also helps maintain the cell's shape and provides structural support. Additionally, the cell membrane contains proteins that facilitate cell-cell communication and recognition.

Answer 4

The cell membrane is semi-permeable and its function is to control the materials going in or out of the cell.

Answer 5

Controls what substances move in the cell and what goes out

Answer 6

it is the boundary between the cell and the cell membrane and it controls movement of substances in and out

Answer 7

the cell membrane is inchargge of what occurs inside the cell and lets other cells enter