Question

The plasma membrane consists of

• A. Proteins embedded in a phospholipid bilayer
• B. Protein embedded in a polymer of glucose molecules
• C. Proteins embedded in a carbohydrate bilayer
• D. Phospholipids embedded in a protein bilayer

Answer 1

The correct option is A Proteins embedded in a phospholipid bilayer

• The cell membrane is a phospholipid bilayer that are selectively permeable membranes which separate the interior of the cells (cell organelles and cytoplasm) from the outside environment or the extracellular space.
  
• These biological membranes are composed of lipid bilayers that form a continuous layer and is made up of amphiphilic phospholipids which have both hydrophilic phosphate head and a hydrophobic tail that consists of two fatty acid chains.
• The protein molecules are embedded in the lipid bilayer and some amount of carbohydrates are also present in the cell membrane.
• So, the correct answer is 'Proteins embedded in a phospholipid bilayer'.