Question

cfa #2: biology

1. the model shows the chemical structure of a molecule

this molecule is a building block of which type of biomolecule?
a. carbohydrate
b. protein
c. lipid
d. nucleic acid

Explanation:

Amino acids are the building blocks of proteins. The given structure has an amino group (\( -NH_2 \)), a carboxyl group (\( -COOH \)), and a side chain (\( -CH_2OH \)), which are characteristic of an amino acid. Carbohydrates are made of monosaccharides (e.g., glucose with a \( -CHO \) or \( -C=O \) and multiple \( -OH \) groups). Lipids (e.g., fatty acids have a long hydrocarbon chain and a \( -COOH \) group, glycerol - based lipids have glycerol structure). Nucleic acids are made of nucleotides (sugar + phosphate + nitrogenous base).

Answer:

B. Protein