mention the composition of cell ans cell membrane ?
Answers
Answer:
Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol). ... They can also attach to the second type of protein, called the intrinsic proteins.
Explanation:
Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol). ... They can also attach to the second type of protein, called the intrinsic proteins.
With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.
The cell membrane is also called as plasma membrane is a thin semi-permeable membrane that surrounds the cytoplasm of the cell. It is a double layer of proteins and lipids. The basic structure of cell membrane is called as the lipid bilayer. Phospholipids are the main component of the cell membrane. In addition, it also contains glycolipids and sterols. The lipid bilayer is embedded with proteins. The function of the cell membrane it regulates the entry of minerals, acts as a receptor, protects the cell, regulates the transport of substances in and out of the cell. It also plays a role in signalling and communication.