Question

which answer choice correctly identifies the carbon molecules?
a = nucleic acid; b = protein; c = carbohydrate; d = lipid
a = protein; b = carbohydrate; c = lipid; d = nucleic acid
a = lipid; b = protein; c = carbohydrate; d= nucleic acid
a = carbohydrate; b = lipid; c = nucleic acid; d = protein

Explanation:

Carbohydrates have -OH groups. Lipids have long -C chains. Nucleic acids have phosphate - sugar - base units. Proteins have amino - acid units. Analyze structures.

Answer:

Based on structures, correct is A = carbohydrate; B = lipid; C = nucleic acid; D = protein.