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NTA Abhyas NEET2020BotanyRespiration in PlantsPractice

The correct sequence of four carbon acids formed during Krebs cycle is

Options

  1. Aoxalo-acetic acid - fumaric acid - malic acid - succinic acid
  2. Boxalo-acetic acid - malic acid - fumaric acid - succinic acid
  3. Csuccinic acid - malic acid - fumaric acid - oxalo-acetic acid
  4. Dsuccinic acid - fumaric acid - malic acid - oxalo-acetic acid

Correct answer

D. succinic acid - fumaric acid - malic acid - oxalo-acetic acid

Step-by-step solution

During Krebs cycle, the first acid (from the given acids) to be formed is succinic acid as follows: Then fumaric acid is formed from succinic acid as follows: Then malic acid is formed from fumaric acid as follows: Then oxalo-acetic acid is formed from malic acid as follows:

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