Assertion: ATP molecules are energy rich molecules. Reason: ATP consists of a purine base adenine, pentose sugar ribose and a string of three phosphate groups.

Assertion: ATP molecules are energy rich molecules. Reason: ATP consis

1.	Assertion: ATP molecules are energy rich molecules. Reason: ATP consists of a purine base adenine, pentose sugar ribose and a string of three phosphate groups.
Answer» If both assertion and REASON are true and the reason is the correct explanation of the assertion. If both assertion and reason are true but reason is not the corret explanation of the assertion. If assertion is true but reason is false. If the assertion and the reason both are false. Solution :ATP has four negativity charged oxygen atoms very close to each other. So the repulsive forces between them is high. On HYDROLYSIS of ATP, a `H_(2)PO_(4)^(-)` ion is eliminated and the number of negatively charged oxygen atoms decreases. Thus, repulsive forces decreases and a large amount of energy is set FREE. when ATP change to ADP,which in turn changes into AMP, energy is released at each step. this how ATP can act as a source of energy.