Identify the correct label in the diagram given below:

The diagram is of the fluid mosaic model of the plasma membrane.
Here are the correct labels for the main components:

1. Phospholipid bilayer – The blue double layer forms the basic structural framework of the membrane, with hydrophilic heads outward and hydrophobic tails inward.

2. Integral (transmembrane) proteins – The large red/orange proteins spanning across the bilayer, functioning as channels, carriers, or receptors.

3. Peripheral proteins – The smaller proteins attached on the inner or outer surface of the membrane.

4. Carbohydrate chains – The orange, branch-like structures attached to proteins (glycoproteins) or lipids (glycolipids), involved in cell recognition and signaling.

5. Cholesterol molecules – The small yellow structures between phospholipid tails, helping to maintain membrane fluidity and stability.

So, the labeled structures in the image are:

• A → Carbohydrate chain (glycoprotein/glycolipid)

• B → Cholesterol molecules