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Pasteur Effect

The first ste...

Question

The first step of alcoholic fermentation from pyruvate is

A

Dehydrogenation

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B

Oxidation

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C

Decarboxylation

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D

Oxidative decarboxylation

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Solution

The correct option is C Decarboxylation
In alcoholic fermentation, pyruvate is first converted into acetaldehyde with the help of the enzyme pyruvate decarboxylase, and carbon dioxide is released. In the next step, acetaldehyde is reduced to ethanol.

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Similar questions

Q. Assertion : Fermentation is incomplete oxidation of glucose.

Reason : Pyruvic acid decarboxylase, alcohol dehydrogenase catalyze the reaction.

Q. Short / Long Answer Types :
What is fermentation and how does it differ from glycolysis? Mention the benefit of pyruvate reduction during fermentation. What types of organisms carry out lactate fermentation, and what types carry out alcoholic fermentation?

Q. After glycolysis, the first step of ethyl alcohol fermentation requires

Q. Assertion: Fermentation occurs by the incomplete oxidation of glucose.
Reason: Yeast forms ethanol & CO2 from pyruvic acid.

Q. Complete the following process in yeast cells.
Glucose→ Pyruvate →Fermentation
→_________

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