Question

match the following structures to their biomolecule
carbohydrate lipid protein nucleic acid

Explanation:

Step1: Identify amino acid structure

The $H_2N - C - COOH$ with an $R$ group is an amino acid, the building block of proteins.

Step2: Identify lipid structure

The long - chain structure with many $C - H$ bonds is characteristic of lipids, like fatty acids in fats.

Step3: Identify carbohydrate structure

The $CH_2OH$ - containing ring structure with multiple $-OH$ groups is a monosaccharide, a type of carbohydrate.

Step4: Identify nucleic acid structure

The structure with a phosphate group and nitrogen - containing rings (nucleobases) along with a sugar is a nucleotide, the building block of nucleic acids.

Answer:

1. $H_2N - C - COOH$ (with $R$ group) - Protein
2. Long - chain structure (second from left) - Lipid
3. $CH_2OH$ - containing ring structure (third from left) - Carbohydrate
4. Structure with phosphate and nitrogen - containing rings (right - most) - Nucleic Acid