Assertion : The bonds attaching second and third phosphated in higher nucleotide are high energy bonds
Reason : The bonds are attached against force of repulsion.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion.
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

ATP is an unstable molecule which hydrolyzes to ADP and inorganic phosphate when it is in equilibrium with water. The high energy of this molecule comes from the two high energy phosphates. Electrostatic repulsion of the four negative charges on the oxygen of ATP molecule. Like charges repel and opposites attract. Therefore if there are four negative charges in close proximity they will naturally repel each other and this makes ATP an unstable molecule.