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Question

Name the following.
The scientist who for the first time isolated and purified the enzyme urease in crystalline form from Jack bean (Canavalia ensiformis)

A
Kuhne (1826)
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B
Hayashi (1826)
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C
Kurosawa (1926)
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D
Sumner (1926)
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Solution

The correct option is D Sumner (1926)
Protein nature of enzymes was first discovered by Sumner. Sumner, in 1926, also purified the enzyme urease and obtained it in crystalline form. For this work, Sumner was awarded nobel prize in the year 1946.

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