What are the cell membranes functions?

Answer 1

One function is that the cell membrane forms a barrier between the inside of a cell and the outside. another is that it can aloso change the internal enviorment those are changes of how the cells responde to what is happening outside in its surroundins. This happeneds by moving things around the membrane in a way in which they have the control of it(a controlled way). There are more reasons though. but i hope this helps. :-)

Answer 2

The cell membrane is made up of bilayers of phospholipids which are the structural foundations for all cell membranes. Phospholipids within the bilayer also move, where they spin, flex their tails to counter close packing, diffuse sideways, and help fluidity, which also results from short-tailed lipids and unsaturated tails.

Cell membranes contain different proteins which promote different actions. The adhesion proteins are glycoproteins that help cells stay connected to each other in a tissue. The recognition proteins determines the certain cell type, help lead the cell into forming into tissues, and functions in cell to cell recognition and coordination. The receptor proteins have connecting areas for hormones that can activate changes in the cell's actions, such as cell development. The transport proteins allow water soluble substances to be able to move within their interior.