Multiple choice

Which of the following micronutrient is essential for activation of urease, the enzyme involved in nitrogen metabolism?

  1. Boron

  2. Molybdenum

  3. Zinc

  4. Nickel
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Nickel (Ni) is an essential cofactor for urease, the enzyme that catalyzes urea hydrolysis in nitrogen metabolism. Molybdenum activates nitrate reductase and nitrogenase, while zinc and boron support other enzymatic functions.

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