What are the possible functions of plasma membranes?

To keep the cell compartments, such as the nucleus, mitochondria, and cytoplasm's pH, ions from the outside environment. Also, play an important role in cell-to-cell communication and transmits cellular signals.

Transport substances like nutrients into cells

The plasma membrane has two major functions. It can first control the material exchange in and out of the cell through the three major transportation pathways. It can also facilitate the signalling between cells. Firstly, there are receptors on the plasma membrane, therefore, enzymes can bind to the receptor in order to trigger downstream activities. Transmitters can also be transported through the cell membrane. And there are plasmodesmata between cells for them to communicate.

Mnemonic - Bats Can Eat If Really extra Selective Too

Bats - Biochemical Activities

Can - Compartmentalisation

Eat - Energy transduction

If - Intracellular interaction

Really extra - Responds to external signals

Selective - Selectively permeable (only lets certain substances through)

Too - Transports Solutes.