Question

1. the monomer shown in the picture below is a... *

carbohydrate
protein
lipid

Explanation:

The structure shown is a monosaccharide (a monomer of carbohydrates). Monosaccharides have a carbon skeleton with multiple hydroxyl (-OH) groups and a carbonyl group (implicit here in the ring structure of a sugar like a pentose). Proteins are made of amino acids, and lipids are non - polar or have a different structure (like fatty acids and glycerol), so this monomer is a carbohydrate.

Answer:

Carbohydrate