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Questions  

Identify the incorrect statement

a
In alcohol fermentation, acetaldehyde is reduced by NADH to ethanol.
b
Pyruvate enters the mitochondrion for further oxidation in aerobic respiration of eukaryotes.
c
Only decarboxylation takes place during the conversion of pyruvic acid to acetyl co.A in aerobic respiration.
d
Two molecules of NADH are produced from the metabolism of two molecules of pyruvic acid to acetyl CoA.

detailed solution

Correct option is C

Pyruvate dehydrogenase complex is used for the conversion of pyruvic acid to acetyl coAPyruvate + NAD+ + CoA → acetyl-CoA + NADH + H+ + CO2

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Link reaction
a. occurs in mitochondrial matrix
b. is catalysed by dehydrogenase enzyme
c. involves oxidative decarboxylation and oxidative phosphorylation
   Choose the correct one(s). 


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