There are a number of lipids that are found in foods and contribute to various functions in the body. triglycerides are the most common lipid found in food and in the body; they consist of a backbone attached to three fatty acids.

The answer is glycerol backbone

Explanation:

Triglycerides are the most common lipid found in food and in the body; they consist of a ___glycerol backbone backbone attached to three fatty acids.

Glycerol is a three carbon molecule that function as the backbone of these membrane lipids. Within an individual glycerophodpholipid, fatty acids are attached to the first and second carbons, and the phosphate group is attached to the third carbon of the glycerol backbone.