Given is the first step of Krebs cycle.Acetyl Co-A + Oxaloacetate → XThe product X is:
Correct answer: A. Citrate
- A. Citrate
- B. Malate
- C. Fumarate
- D. Succinate
Explanation
The Krebs cycle, also known as the citric acid cycle, begins with the condensation of Acetyl Co-A and Oxaloacetate to form citrate. This reaction is catalyzed by the enzyme citrate synthase. Citrate is the first product of the Krebs cycle, and it is crucial for the subsequent steps in energy production.
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About Cellular Respiration
Cellular respiration releases energy from glucose through glycolysis, the link reaction, the Krebs cycle and the electron transport chain, producing ATP. The pathway differs in oxygen availability: aerobic respiration uses oxygen and yields more ATP, while anaerobic respiration produces much less ATP and forms lactic acid in muscles or ethanol and carbon dioxide in yeast.
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