Storage form of free eneragy in the cell -

Ans. is 'b' i.e., ATP o For a biological reaction to proceed in forward direction, free energy (DG) should be less than 0.o Many biological reactions (such as synthesis of macro molecules) are thermodynemically unstable, i.e. their free energy (DG) > 0.o In order for such reactions to proceed, addtional source of energy is required.o ATP plays a central role by acting as a store offree energy with in the cell. Hydrolysis of ATP provides a significant free energy for such reactions.