Question

multiple choice question the cell membrane is composed of a type of lipid molecule called a(n) ______ which has two fatty acids and a phosphate group extending from a glycerol molecule. options: polysaccharide, carbohydrate, phospholipid, triglyceride

Explanation:

To solve this, we analyze each option:

• Polysaccharide: A carbohydrate polymer, not a lipid with the described structure. Eliminate.
• Carbohydrate: Includes sugars, starches, etc., not a lipid with two fatty acids and a phosphate group. Eliminate.
• Phospholipid: Consists of a glycerol molecule, two fatty acid tails, and a phosphate - containing head, matching the description of the cell membrane's lipid component.
• Triglyceride: Has three fatty acids attached to glycerol, not two. Eliminate.

Answer:

C. phospholipid