Question

what is plasma membrane

Answer 1

The plasma membrane of a cell is a network of lipids and proteins that forms the boundary between a cell’s contents and the outside of the cell. It is also simply called the cell membrane. The main function of the plasma membrane is to protect the cell from its surrounding environment. It is semi-permeable and regulates the materials that enter and exit the cell. The cells of all living things have plasma membranes.

hope you like my answer

Answer 2

                                 " Plasma Membrane"

⇒ Plasma membrane is also known as cytoplasmic membrane or plasma -lemma.

⇒ It is selectively permeable thin film-like covering membrane of cell.

⇒ Beside plasma membrane, in eukaryotic cells a intracellular membrane is present , which surround the vacuole and organelles.

⇒ Danielli and Davson (1935) proposed the trilamellar model, states that the plasma membrane is formed of a bi-molecular layer of phospholipids sandwiched between two layer of proteins.

⇒ Robertson (1959) proposed 'Unit Membrane Model'.

⇒ Sanger and Nicolson (1972) put forward the 'Fluid Mosaic Model' of membrane structure.

⇒ Main function is to regulate the flow of material into and out side the cell diffusion of CO₂