Question:
The first stable compound formed in Krebs' cycle is
The first stable compound formed in Krebs' cycle is
Updated On: Jul 29, 2022
- acetyl CoA
- citric acid
- oxaloacetic acid
- fumaric acid.
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The Correct Option is B
Solution and Explanation
Acetyl CoA (2-carbon compound) combines with oxaloacetate (4-carbon compound) in the presence of condensing enzyme citrate synthase to form a tricarboxy lie acid 6-carbon compound called citric acid. It is the first product of Krebs' cycle. CoA is liberated.
$ { Acetyl \,CoA + Oxaloacetate + H_2O ->[Citrate \, Synthase] Citrate +CoA}$
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Concepts Used:
Aerobic respiration
It is the release of a relatively large amount of energy in cells by the breakdown of food substances in the presence of oxygen:
Glucose + Oxygen → Carbon Dioxide + Water.