Cell Membrane Structure And Function

Thin barrier separating inside of cell cytoplasm from outside environment Function.

Cell membrane structure and function. Cell membranes are dynamic structures composed of lipid bilayers and integral membrane proteins. The cell membrane in the axon is specialised for electrical conduction whereas the end of the nerve is specialised for synapsing meaning the composition of the membrane is different. Cell Membrane is present in all organisms including plants.

Its function is to protect the integrity of the interior of the cell by allowing certain substances into the cell while keeping other substances out. Structural model of the plasma membrane where molecules are free to move sideways laterally within a lipid bilayer. The cell membrane supports and protects the cell.

In a cell different parts of the membrane have different functions and therefore their structure is specialised for this. It is a semi-permeable membrane composed of lipids and proteins. An example of this specialisation can be seen in the different parts of a nerve.

In plant cells the membrane encapsulates the protoplasm. Read on to explore more insights on cell structure and function. The cell membrane is a phospholipid bi-layer into which proteins glycoproteins and glycolipids are ingrained.

1 Isolate cells contents from outside environment 2 Regulate exchange of substances between inside and outside of cell 3 Communicate with other cells. Like a drawbridge intended to protect a castle and keep out enemies the cell membrane only allows certain molecules to enter or exit. These proteins have transmembrane domains which insert into the lipid bilayer and can form complexes with both extracellular and intracellular proteins.

Very oily not solid and tails can possibly flip flop and move freely. The cell membrane is present in all the cells. A cells plasma membrane defines the cell outlines its borders and determines the nature of its interaction with its environment.