GB Food Nutrition

Glucose is a source of energy. Which one of the following types of molecule is Glucose?

  1. Carbohydrate
  2. Protein
  3. Fat
  4. Nucleic acid


Glucose is a sugar with the molecular formula C6H12O6. The suffix "-ose" denotes carbohydrate. Glucose is made during photosynthesis from water and carbon dioxide, using energy from sunlight. It is types of monosaccharides.

Glucose is the human body's key source of energy. Through aerobic respiration, it provides about 3.75 kilocalories of food energy per gram.

The correct option is A.