Is cholesterol a monomer or polymer?

Answer 1

Cholesterol is a big molecule, C27H46O.

However, it is a single molecule, and thus a monomer.

In cells cholesterol is normally embedded in cell membrane and makes hydrogen bonds with surrounding molecules.

In the blood, it is also not found alone, but packaged with lipids (triglycerides) and lipoproteins. Thus when looking at cholesterol levels in the blood, people often refer to HDLs and LDLs.

The proteins in HDLs and LDLs are also discrete units with a specific structure, but they are considered to be polymers of amino acids.