Biology
Grade-7
Easy

Question

During cellular respiration, which of the following molecule is broken down?

  1. Galactose 
  2. Glucose 
  3. Fructose 
  4. Lactose 

hintHint:

straight C subscript 6 straight H subscript 12 straight O subscript 6 plus 2 NAD plus 2 ADP plus 2 Pi rightwards arrow 2 Pyruvate plus 2 NADH plus 2 straight H to the power of plus plus 2 ATP plus 2 straight H subscript 2 straight O.

The correct answer is: Glucose


    • Cellular respiration is a catabolic reaction involving the breakdown of complex molecules to produce energy
    • Energy for cellular respiration is obtained from the breakdown of glucose
    • Glucose is obtained from the food we consume in the form of carbohydrates
    • Glycolysis is the breakdown of glucose in a series of reactions producing pyruvate and ATP
    • The reaction of glycolysis is as follows:
    • 2ATP molecules are produced during glycolysis from one molecule of glucose

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