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NEET 2006 Biology question

BiologyRespiration in PlantsNEET 2006

How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to CO and HO yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ?

Answer: (3)

Solution

Complete oxidation of 1 mole of glucose releases 686 kcal, and each mole of ATP can store 12 kcal in its high-energy phosphate bond. Maximum number of ATP = 686 / 12 = 57.2, i.e. about 57 molecules,

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Question ID VK-089670