Question

Which term describes the class of molecules that includes starch and glycogen?

A. Lipids

B. Carbohydrates

C. Nucleic Acids

D. Proteins

Answer 1

B Is the correct Answser 

Answer 2

The correct answer is option B. Carbohydrates.    

The Starch and the glycogen are the molecules, which belong to the carbohydrates. The carbohydrates are the sugar molecules or polymers of sugars. The general formula of the carbohydrate is$C_{n}  (H_{2} O)_{n}$, the ratio of the carbon:hydrogen:oxygen is 1:2:1. The starch and the glycogen both are the polymers of the glucose the formula of the glucose is $C_{6}H_{12}O_{6}$, hence, the the ratio of the carbon:hydrogen:oxygen in glucose is 1:2:1, hence, starch and the glycogen are carbohydrates.

Lipids is comprised of fats, oils, waxes as well as some hormone and molecules, they are different than the carbohydrates. Nucleic acids are the polymer of nucleotide consisting of sugar, phosphate group and nitrogenous base. The proteins are the the polymer of amino acids, not sugars.