Which biomolecule is the primary source of stored energy in the human body?
A
Carbohydrates
B
Vitamins
C
Proteins
D
Fats (lipids)
Correct Answer: Option D — Fats (lipids)
Explanation:
While carbohydrates provide immediate energy, fats (lipids) serve as the primary long-term energy storage molecules in the human body, yielding roughly twice the energy per gram compared to carbohydrates or proteins.