* Glucose is a simple sugar that serves as the primary energy source for most cells in the body. It's produced through the breakdown of carbohydrates in food and can be stored as glycogen in the liver and muscles.
Let's look at the other options:
* Protein is made up of amino acids, not carbohydrates.
* DNA is a nucleic acid, not a carbohydrate. It carries genetic information.
* Fat (or lipids) are a type of macromolecule that provides energy and insulation. They're not carbohydrates.
