Question

Complete oxidation of 1 gm of glucose molecule gives rise to

• A. 68,60,000 cal
• B. 6,86,000 cal
• C. 68,600 cal
• D. 6,800 cal

Answer 1

Answer: (B)

6,86,000 cal

Complete oxidation of 1 gram of glucose molecule yields 686 kcal, which is equivalent to 686000 calories of energy. Of the 686 kcal, 13 is lost to increase the entropy to break bonds in glucose and the rest energy is used to make ATPs (281 kcal) and rest 392 kcal is released as heat.