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Biomolecules — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules1 Mark
MCQ
The enzyme purified and crystallised for the first time was:
  • ✓
    Urease
  • B
    Insulin
  • C
    Diastase
  • D
    Zymase
✓

Answer

Correct option: A.
Urease
Enzymes are the proteins which catalyze a biochemical interaction. It was crystallized by Sumner. They were found in yeast extract by Buchner in $1897.$
He prepared a yeast extract and added sugar solution to it. After some time he noticed the alcohol formation in the extract which was a sign of fermentation which took in presence of enzyme.
Later on, Sumner crystallized an enzyme known as urease and reported that all enzymes are protein. Urease catalyzes the hydrolysis of urea into carbon dioxide and ammonia.

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