Biology
Grade-10
Easy
Question
Which of the following statements about the Krebs' cycle is incorrect?
- A six-carbon compound is the starting point.
- It can be found in mitochondria.
- It's also known as the citric acid cycle.
- Malic acid is the intermediary molecule that connects glycolysis and the Krebs cycle.
Hint:
Krebs' cycle is a series of events in which two carbon dioxide, one ATP, and one NADH are released. It starts with four carbon molecules.
A number of processes, including redox, dehydration, hydration, and decarboxylation reactions, are involved in the Krebs' cycle.
The correct answer is: Malic acid is the intermediary molecule that connects glycolysis and the Krebs cycle.
The statement "Malic acid is the intermediary molecule that connects glycolysis and the Krebs cycle" about the Krebs cycle is incorrect.
- The process of the cycle starts with the condensation of acetyl-CoA with oxaloacetate. this reaction is controlled by the amount of ATP present.
- If the ATP level increases then the rate of the creation decreases and vice versa. After glycolysis, the pyruvate is then converted into acetyl CoA which enters the citric acid cycle.
- The Krebs cycle is the pathway that all organisms use to generate energy. Acetyl CoA acts as the intermediate compound that links pyruvate to the Krebs cycle.
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