Question

Who coined the term zymase for enzymes in Yeast?

• A. Buchner
• B. Kuhne
• C. Pasteur
• D. Sumner

Answer 1

The correct option is A Buchner

Zymase was found accidentally in yeast extract by Buchner in 1897. He prepared a yeast extract and added sugar solution to it. After sometime he noticed the alcohol formation in the extract which was a sign of fermentation which took in presence of enzyme. Zymase helps in the fermentation of sugar into ethanol and carbon dioxide. The sugar in the juice acted as substrate for the enzyme in the yeast cell.

So, the correct answer is option A.