Question

In order to prevent formation of lactic acid, pyruvic acid should enter in a. Mitochondria matrix b. Outer chamber of mitochondria c. Crista d. Oxysome​

Answer 1

In order to prevent formation of lactic acid, pyruvic acid should enter in Mitochondrial matrix.

Explanation:

• Pyruvic acid is a three carbon molecule which is the end product of glycolysis that takes place in cytoplasm.
• In presence of oxygen, pyruvic acid enters the mitochondria and goes through Krebs cycle .
• If oxygen is absent then pyruvic acid ferments to form lactic acid.
• Krebs cycle produces a pool of energy producing molecules like ATP, NADH, and FADH₂.

Answer 2

Formation of lactic acid, pyruvic acid should enter in Mitochondrial matrix.

Option A

EXPLANATION:

• All energy that is generated inside our body is due to breakdown of glucose molecule into simple molecules to release energy.
• This release of energy takes by a cycle called Kerb's Cycle which take place in mitochondrial matrix in which a three-carbon molecule of pyruvate is broken down in "presence of oxygen" to release energy in form of ATP.
• But, when our body requires large amount of energy for performing some strenuous exercises then more energy is required, for this breakdown of pyruvate in presence of oxygen is necessary.
• Sometimes, there is not enough oxygen then pyruvate does not enter the mitochondrial matrix and instead forms lactic acid, which releases comparatively lower energy and result of it is fatigue.

To learn more about Mitochondria matrix:

Mitochondrial matrix acidification anaerobic respiration

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Short note on matrix present in mitochondria​

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