The cell membrane is chemically composed of 40-60% of Bbi6epuTe ozuH orBer: a. cytosol b. sugar c. fats d. lipids

The correct answer is d. lipids.<br /><br />The cell membrane is chemically composed of 40-60% lipids. Lipids are a diverse group of organic compounds that are insoluble in water but soluble in nonpolar solvents. They play a crucial role in the structure and function of the cell membrane.<br /><br />The cell membrane is primarily composed of a phospholipid bilayer, which is a double-layered structure made up of phospholipids. Phospholipids are a type of lipid molecule that consists of a hydrophilic (water-loving) head and two hydrophobic (water-repelling) tails. The hydrophilic heads face the aqueous environment inside and outside the cell, while the hydrophobic tails face each other, forming the interior of the membrane.<br /><br />The remaining 40-60% of the cell membrane is composed of various other components, such as proteins, carbohydrates, and cholesterol. These components are embedded within the phospholipid bilayer and contribute to the membrane's structure, function, and permeability.<br /><br />Therefore, the correct answer is d. lipids.