Question

Choose the correct answers from the alternatives given :
In alcoholic fermentation is the final acceptor of the electrons stripped from glucose.

• A. sulphate
• B. pyruvate
• C. acetaldehyde
• D. oxygen

Answer 1

The correct option is C acetaldehyde

• 2 enzymes are present in the alcoholic fermentation of pyruvate they are decarboxylase and alcoholic dehydrgenase.
• The pyruvate is first converted to acetaldehyde in the presence of decarboxylase enzyme.
• This acetaldehyde is the final acceptor of electrons and it converts the NADH to NAD so that the process of glycolysis can continue without hinderance.
• This acetaldehyde is then converted to ethanol in presence of alcohol dehydrogenase.
• Therefore here the acetaldehyde or the pyruvate are the final acceptor of electron.
• Therefore options 'pyruvate' and 'acetaldehyde' both can be correct answers.