Not sure what you're looking for, but fat, carbohydrates, and protein are the three sources of calories in food.
Protein, fat, and carbohydrates provide energy for the body. Carbohydrates provide bodily energy the quickest.Fats/Lipids are stored as body fat for later/emergency usage.Proteins usually are used to...
vitamin c
That would be Nucleic Acids, if I'm correct. These make up DNA and RNA structure - they don't provide energy to the body.
Glucose in the purest, and quickest, form of energy the body can metabolise.