Triglyceride components include glycerol and three fatty acids.

Triglyceride components include glycerol and three fatty acids.

• A. Glycerol and two fatty acids
• B. Glycerol and four fatty acids
• C. Glucose and three fatty acids
• D. Glycerol and three fatty acids

Answer: (D)

Triglycerides are built from a glycerol backbone with three fatty acid chains attached by ester bonds. Glycerol has three hydroxyl groups, one for each fatty acid, so a triglyceride ends up with glycerol plus three fatty acids. The other options describe either the wrong number of fatty acids (two would be a diglyceride; four isn’t the standard triglyceride structure) or a different molecule altogether (glucose is a sugar, not part of the triglyceride backbone). So the description that matches a triglyceride is glycerol with three fatty acids.

Triglycerides are built from a glycerol backbone with three fatty acid chains attached by ester bonds. Glycerol has three hydroxyl groups, one for each fatty acid, so a triglyceride ends up with glycerol plus three fatty acids. The other options describe either the wrong number of fatty acids (two would be a diglyceride; four isn’t the standard triglyceride structure) or a different molecule altogether (glucose is a sugar, not part of the triglyceride backbone). So the description that matches a triglyceride is glycerol with three fatty acids.