Question

The structure of plasma membrane is mainly held together by:
A)Proteins
B)Carbohydrates
C)Phospholipids
D)All of the above

Answer 1

Answer:

Explanation:

Despite their differing functions, all biological membranes have a common general structure: each is a very thin film of lipid and protein molecules, held together mainly by noncovalent interactions.

Answer 2

The structure of plasma membrane is mainly held together by Proteins.

Explanation:

• The cell membrane is held together by hydrogen bonding as well as electrostatic forces of attraction.
• The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins.
• A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate linked head group.
• Each is a very thin film of lipid and protein molecules held together mainly by non covalent interactions.
• For the phospholipid bilayer even though it consists of hydrophilic heads on the outer membrane the non covalent hydrophobic tails of the inner membrane is the key to hold the entire membrane together because there are Vander Waals attractive forces.
• Plasma membrane is the outer covering of the cell that is composed of phospholipid bilayer and proteins.
• Plasma membrane is a thin membrane that surrounds every living cell, separating it from the external environment around it. The plasma membrane consists of water soluble substances like nucleic acids, proteins, carbohydrates.
• Typically the plasma membrane defines the boundary of a cell.