In which macromolecule category would you classify glucose?

Glucose is classified as a carbohydrate because it is a simple sugar, which is a type of carbohydrate known as a monosaccharide. Carbohydrates are primarily composed of carbon, hydrogen, and oxygen and serve various functions in living organisms, including providing energy. Glucose specifically plays a vital role in cellular respiration, where it is broken down to release energy that cells can use.

In contrast, proteins are made up of amino acids and serve as structural components and enzymes; lipids include fats, oils, and phospholipids that make up cell membranes and provide energy storage; and nucleic acids, like DNA and RNA, are involved in the storage and transmission of genetic information. This categorization clearly establishes glucose as a carbohydrate.