CELL RESPIRATION
GLYCOLYSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glucose and pyruvate
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H2O and CO2
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CO2, acetyl-CoA, and NADH
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Coenzyme A and NADH
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Detailed explanation-1: -Firstly, the link reaction produces one molecule of carbon dioxide and one molecule of reduced NAD. Its final product, acetyl coenzyme A, becomes a primary reactant of the Krebs cycle. The Krebs cycle produces one molecule of FADH2 and three molecules of NADH. It also produces two molecules of carbon dioxide.
Detailed explanation-2: -Pyruvate oxidation. Pyruvate travels into the mitochondrial matrix and is converted to a two-carbon molecule bound to coenzyme A, called acetyl CoA. Carbon dioxide is released and NADH is made.
Detailed explanation-3: -In glycolysis, glucose metabolizes into two molecules of pyruvate, with an output of ATP and nicotinamide adenine dinucleotide (NADH). Each pyruvate oxidizes into acetyl CoA and an additional molecule of NADH and carbon dioxide (CO2).
Detailed explanation-4: -The citric acid cycle is a series of chemical reactions that takes place in the mitochondrial matrix. This cycle uses acetyl CoA, derived from sugar and fat breakdown, to form ATP, NADH, FADH2, and carbon dioxide. The NADH and FADH2 can be used to form additional ATP through the electron transport chain.