Class 11 · Respiration in Plants

Pyruvate Metabolism: Fermentation vs Aerobic — NEET Biology

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There are three major ways in which different cells handle pyruvic acid produced by glycolysis. These are lactic acid fermentation, alcoholic fermentation and aerobic respiration. Fermentation takes place under anaerobic conditions in many prokaryotes and unicellular eukaryotes. For the complete oxidation of glucose to CO₂ and H₂O, however, organisms adopt Krebs' cycle which is also called as aerobic respiration. This requires O₂ supply.

NCERT Biology · Class 11 · Chapter 12 · Paragraph 18
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Assertion (A): Fermentation is a metabolic process that occurs in living organisms. Reason (R): Fermentation takes place under aerobic conditions in prokaryotes and eukaryotes.

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Correct answer: C If assertion is true but reason is false.

NCERT confirms fermentation occurs in living organisms (Assertion true). However, NCERT states “Fermentation takes place under anaerobic conditions in many prokaryotes and unicellular eukaryotes.” The Reason falsely claims aerobic conditions instead of anaerobic (false).

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What does NCERT say about There are three major?
There are three major ways in which different cells handle pyruvic acid produced by glycolysis. These are lactic acid fermentation, alcoholic fermentation and aerobic respiration.
Has this concept appeared in NEET?
Practice this NCERT concept with questions on MedicNEET.
Which chapter is this from?
Respiration in Plants, Class 11 NCERT Biology.

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