Published by:
CGP EDU Academic Team
Published on: August 21, 2026
Which of the following is correct about the fate of pyruvic acid under the given conditions?
A
In the presence of oxygen
Energy; 
Lactic acid + Energy; 
Ethanol 
Energy
Energy; Lactic acid + Energy; Ethanol Energy B
When there is depletion of oxygen in muscle cells
Lactic acid + Energy; 
Energy; C → Ethanol + Energy
Lactic acid + Energy; Energy; C → Ethanol + Energy C
When raw material under anaerobic conditions is kept with Saccharomyces cerevisiae
Ethanol + Energy; 
Lactic acid + Energy; 
Energy
Ethanol + Energy; Lactic acid + Energy; Energy D
Ethanol 
Energy; 
Lactic acid only; 
Energy
Text Solution
Verified by ExpertsThe correct answer is:
A
Aerobic condition : Pyruvate is fully oxidised via mitochondria to 
, releasing energy (ATP). 
depletion in muscles : Pyruvate is reduced to lactic acid, with energy release (lactic acid fermentation).
Anaerobic in yeast : Pyruvate undergoes alcoholic fermentation to ethanol 
, with energy release.
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