Storage form of free energy in the cell is:: (A) NADH, (B) ATP, (C) G-6-Phosphate, (D) Creatine phosphate
Answer is B. ATP is the storage form of free energy in most of the cells of the body. Creatine phosphate or Phospho-creatine is the immediate source of ATP in muscles for first 8-10 seconds. High energy compounds in biological systems are : ATP GTP UTP Creatine Phosphate Phosphoenol Pyruvate Coenzyme A 1,3-bisphospho glycerate Carbamoyl Phosphate