Question

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

Explanation:

Carbohydrates have a characteristic ring - like structure with multiple hydroxyl (-OH) groups, which is seen in the first molecule. Lipids typically have long hydrocarbon chains and can have a variety of structures including those with a non - polar nature and specific functional groups. The second molecule has a long chain structure typical of a lipid.

Answer:

A. A = carbohydrate; B = lipid; C = nucleic acid; D = protein (assuming the multiple - choice option with the correct identification of carbohydrate and lipid as described above is A among the given ones)