Question

question 7
the simplest and most common molecule used by living things for energy is glucose. it is a
protein
nucleic acid
lipid
carbohydrate

Explanation:

Glucose is a simple sugar. Carbohydrates include sugars. Proteins are made of amino - acids, nucleic acids are DNA and RNA, and lipids are fats, oils etc. Glucose belongs to carbohydrates.

Answer:

D. Carbohydrate