A) dihydroxy acetone
B) 3-phosphoglyceraldehyde
C) pyruvate
D) glucose-6-phosphate
Correct Answer: A
Solution :
Glycolysis and fermentation are common upto formation of two molecules of pyruvate from a glucose molecule. In aerobic respiration pyruvic acid and \[NAD{{H}_{2}}\] form ATP via electron transport chain while in case of fermentation electrons from \[NAD{{H}_{2}}\] are used to form ethanol or lactic acid. In the process of glycolysis glucose is phosphorylated in first step to from glucose 6-phosphate with the help of enzyme hexokinase. The molecule of fructose 1-6 biphosphate undergoes cleavage by aldolase enzyme to form two compounds of 3C, i.e, 3-phosphoglyceraldehyde and dihydroxy acetone phosphate. These two triose phosphates can isomerise into each other.
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