CELL RESPIRATION
GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2 molecules of ATP
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2 molecules of PGAL
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2 molecules of NADH
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2 molecules of lactic acid
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Detailed explanation-1: -What is glycolysis? Glycolysis is a series of reactions that extract energy from glucose by splitting it into two three-carbon molecules called pyruvates.
Detailed explanation-2: -Respiration of 1 molecule of glucose or 2 PGAL produces 38 ATP molecules, therefore 3 molecule of glucose, will produce 6 PGAL and 38×3=114 ATP molecules. So, the correct answer is “option b".
Detailed explanation-3: -In glycolysis, glucose (C6) is split into two 3-carbon (C3) pyruvate molecules. This releases energy, which is transferred to ATP.
Detailed explanation-4: -* Oxidation of PGAL (2) provides the energy to add a second phosphate, while creating a 2 molecules of NADH. It is the addition of this phosphate which provides the excess ATP yield of the pathway.
Detailed explanation-5: -PGAL is a 3 carbon compound. Two PGAL combine to form a glucose.