Which of the following processes releases energy to be used by a cell? A phosphate group is added to ATP to form ADP. A phosphate group is removed from ADP to form ATP. A phosphate group is added to ADP to form ATP. A phosphate group is removed from ATP to form ADP.

Question

Which of the following processes releases energy to be used by a cell?  A phosphate group is added to ATP to form ADP.  A phosphate group is removed from ADP to form ATP.  A phosphate group is added to ADP to form ATP.  A phosphate group is removed from ATP to form ADP.

lanre · Answer

This question was taken from this link: http://answers.yahoo.com/question/index?qid=20111114191603AAkHEen. And the following answer was provided: A phosphate group is removed from ATP to form ADP. With explanation: A phosphate group is removed from ATP to form ADP. Breaking bonds generally releases energy and in this case you are breaking a phosphate bond. Adding phosphates would need energy to create bonds, so answers 1 and 2 are wrong. Answer 3 is incorrect because if you removed a phosphate from ADP you would have AMP not ATP. ALWAYS MAKE REFERENCE TO ANY SITED QUOTED.