Lipids do not have a single monomer, but and acids make up lipids.

Glycerol and fatty acids

Explanation:

Lipids, such as triglycerides, are made up of 2 main parts.

First, there is a glycerol backbone.

Attached to this glycerol backbone are 3 fatty acid chains, which can be saturated or unsaturated.

So, glycerol and fatty acids make up lipids.

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