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Question
The form in which carbon leaves the citric acid cycle is
The form in which carbon leaves the citric acid cycle is
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Solution
The correct option is B Carbon dioxide
- Pyruvic acid is a 3 carbon molecule which is first oxidised to acetyl coA after reacting with coenzyme A. During this reaction one molecule of NADH and one molecule of Carbon dioxide is released.
- Second molecule of carbon dioxide along with a molecule of NADH is released when 6 carbon citric acid is converted to ketoglutaric acid .
- Third molecule of carbon dioxide is released during conversion of ketogluataric acid to succinic acid along with the release of NADH and GDP.
- Thus all three molcules of carbon present in the pyruvic acid are released in the form of carbon dioxide from the kerb cycle.
- Therefore the correct answer is option 'Carbon dioxide'.
- Pyruvic acid is a 3 carbon molecule which is first oxidised to acetyl coA after reacting with coenzyme A. During this reaction one molecule of NADH and one molecule of Carbon dioxide is released.
- Second molecule of carbon dioxide along with a molecule of NADH is released when 6 carbon citric acid is converted to ketoglutaric acid .
- Third molecule of carbon dioxide is released during conversion of ketogluataric acid to succinic acid along with the release of NADH and GDP.
- Thus all three molcules of carbon present in the pyruvic acid are released in the form of carbon dioxide from the kerb cycle.
- Therefore the correct answer is option 'Carbon dioxide'.
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