A cell pumps hormones out into the bloodstream; a process that requires energy. If 4 ATP were converted to ADP, how much energy was used? A.4 kJ

B. 1600 kJ

C. 30.5 kJ

D. 122 kJ

Option D.

122kj

Explanation:

It is 122KJ of energy is used from the conversion of ATP to ADP because hydrolyses of 1 mole of ATP requires 30.5KJ of energy. Therefore, if 4 ATP is hydrolyses, it will be 4× 30.5=122KJ.

It will give 122KJ.

This energy is given out because there is cleavage of high energy phosphate bond in ATP while converting it into ADP.

In order to initiate the cleavage of this bond, activation energy is required and it is use. But this activation energy is very less in magnitude compare to the energy released when high energy phosphate bond is cleaved.

What that is gotten from 4 ATP been converted to ADP is 122KJ and the rest is use to compensate activation energy.

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