Question

How is the plasma membrane of a cell organized?

Answer 1

Answer:

The plasma membrane of a cell is organised as:

Two layers of phospholipids, with their polar hydrophilic heads facing away from each other.

Explanation:

• Plasma membrane forms the external boundary of the cell.
• The Plasma membrane is selectively permeable and allows only selected solute molecules to pass through it.
• The Basic structure of the plasma membrane is the lipid bilayer.
• This bilayer is composed of two leaflets of amphipathic lipid molecule.
• The polar heads of the molecules are in contact with the intra- or extracellular aqueous phase while the non-polar hydrophobic tails face each other forming the hydrophobic interior of the membrane.
• The three clases of lipids present in lipid bilayer are- phospholipids, glycolipids and sterols.