Question:
Urease catalyzes hydrolysis of urea to CO2 and NH4+. Which of the following elements is an essential part of urease?
Urease catalyzes hydrolysis of urea to CO2 and NH4+. Which of the following elements is an essential part of urease?
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Urease: Contains nickel (Ni).
Catalyzes: Urea + H2O \(\rightarrow\) CO2 + 2NH3.
Nickel is a micronutrient for plants and microbes.
Catalyzes: Urea + H2O \(\rightarrow\) CO2 + 2NH3.
Nickel is a micronutrient for plants and microbes.
Updated On: Sep 1, 2026
- Boron
- Copper
- Zinc
- Nickel
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of metalloenzymes.
Step 2: Detailed Explanation:
Nickel (Ni) is an essential part of urease.
Urease is a nickel-containing enzyme.
It catalyzes the hydrolysis of urea to CO2 and NH4+.
It was the first enzyme shown to contain nickel.
Boron (A): Essential for cell wall formation.
Copper (B): Essential for cytochrome oxidase.
Zinc (C): Essential for carbonic anhydrase.
Thus, nickel is an essential part of urease.
Step 3: Final Answer:
Thus, nickel is an essential part of urease, which corresponds to option (D).
[0.5cm]
This question tests knowledge of metalloenzymes.
Step 2: Detailed Explanation:
Nickel (Ni) is an essential part of urease.
Urease is a nickel-containing enzyme.
It catalyzes the hydrolysis of urea to CO2 and NH4+.
It was the first enzyme shown to contain nickel.
Boron (A): Essential for cell wall formation.
Copper (B): Essential for cytochrome oxidase.
Zinc (C): Essential for carbonic anhydrase.
Thus, nickel is an essential part of urease.
Step 3: Final Answer:
Thus, nickel is an essential part of urease, which corresponds to option (D).
[0.5cm]
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