Multiple choice

Which of the following matches of metalloenzyme and metal cofactors are incorrect? P. Tyrosinase : Copper Q. Urease : Copper R. Dopamine β-hydroxylase : Nickel S. Catechol dioxygenase : Iron

  1. Only P and Q

  2. Only P and S

  3. Only Q and R

  4. Only Q and S

  5. Only R and S

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Urease is a nickel containing metalloenzyme of high molecular weight that catalyses the hydrolysis of urea into carbon dioxide and ammonia. Dopamine β-hydroxylase is a copper containing enzyme that synthesises norepinephrine from dopamine.