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Question

Enzyme urease, first crystallised by Sumner was obtained from

A
Human urine
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B
Canavalia
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C
Pancratium
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D
Thalictrum
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Solution

The correct option is B Human urine
Sumner crystallized an enzyme known as urease from human urine and reported that all enzymes are protein. It catalyzes the hydrolysis of urea into carbon dioxide and ammonia. John Howard Northrop and Wendell Meredith Stanley shared the noble prize with Sumner for their work on the enzyme.
Buchner in 1897, prepared a yeast extract and added sugar solution to it and observed the process of fermentation.
So, the correct answer is option A.

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