SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A six carbon molecule
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a molecule formed at the end of glycolysis
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the molecule that starts the citric acid cycle
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the end product of the electron transport chain
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Detailed explanation-1: -Glycolysis starts with one molecule of glucose and ends with two pyruvate (pyruvic acid) molecules, a total of four ATP molecules, and two molecules of NADH.
Detailed explanation-2: -Pyruvic acid is the end product of glycolysis. Two molecules of pyruvic acid are generated by the partial oxidation of one glucose molecule.
Detailed explanation-3: -Pyruvate is the end product of glycolysis, which is converted into acetyl coA that enters the Krebs cycle when there is sufficient oxygen available. But when the oxygen is insufficient, pyruvate is broken down anaerobically, such as in fermentation that creates lactate or ethanol as an end-product.
Detailed explanation-4: -Overall, glycolysis converts one six-carbon molecule of glucose into two three-carbon molecules of pyruvate.
Detailed explanation-5: -Pyruvate or Pyruvic acid is a 3-carbon molecule with a ketone and carboxylic acid functional group. It has the chemical formula C3H4O3 and a molar mass of 88.06 g/mol. It plays a major part in the glycolytic pathway (glycolysis).