The CORRECT combination for metalloenzymes given in Column I with their catalytic reactions in Column II is · ABC26IN0560
Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Bioinorganic – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Medium
The CORRECT combination for metalloenzymes given in Column I with their catalytic reactions in Column II is | Column-I | | Column-II | |
|---|
| (i) | Cytochrome P-450 | (K) | $2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}$ |
| (ii) | Catalase | (L) | $\mathrm{R}-\mathrm{CH}_{2} \mathrm{OH}+\mathrm{O}_{2} \rightarrow \mathrm{R}-\mathrm{CHO}+\mathrm{H}_{2} \mathrm{O}_{2}$ (R = alkyl or aryl) |
| (iii) | Galactose oxidase | (M) | $\mathrm{O}_{2}+4 \mathrm{H}^{+}+4 \mathrm{e}^{-} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}$ |
| (iv) | Cytochrome c oxidase | (N) | $\mathrm{R}-\mathrm{H}+\mathrm{O}_{2}+2 \mathrm{e}^{-}+2 \mathrm{H}^{+} \rightarrow \mathrm{R}-\mathrm{OH}+\mathrm{H}_{2} \mathrm{O}$ (R = alkyl or aryl) |
(a)(i)-(M); (ii)-(K); (iii)-(L); (iv)-(N)
(b)(i)-(N); (ii)-(K); (iii)-(L); (iv)-(M)
(c)(i)-(M); (ii)-(N); (iii)-(K); (iv)-(L)
(d)(i)-(N); (ii)-(L); (iii)-(K); (iv)-(M)
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
P450 – R–H hydroxylation (N); catalase – 2H₂O₂ → 2H₂O + O₂ (K); galactose oxidase – alcohol → aldehyde + H₂O₂ (L); cytochrome c oxidase – O₂ + 4H⁺ + 4e⁻ → 2H₂O (M) (b).
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