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    Which enzyme was first of all synthesized in crystal form?
    Question

    Which enzyme was first of all synthesized in crystal form?

    A.

    Lipase

    B.

    Zymase

    C.

    Urease

    D.

    None of these

    Correct option is C

    ✅ (c) Urease: • First enzyme crystallized by James B. Sumner in 1926 from jack bean. • This proved that enzymes are proteins, a major discovery in biochemistry. • Urease breaks urea into ammonia and CO₂.
    ❌ (a) Lipase, (b) Zymase: • Important enzymes, but not first to be crystallized.
    ❌ (d) None of these: • Incorrect as urease was the first.

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