The composition of which of the following is highest in the cell membrane?
Proteins
Phospholipids
Cholesterol
Carbohydrates
As per the 12th Edition of Guyton, the following are the approximate composition of a cell membrane/ plasma membrane.

Proteins- 55%
Phospholipids- 25%
Cholesterol-13%
Other lipids- 4%
Carbohydrates- 3%