Which of the following enzymes has/have heme as a prosthetic group? (i) Catalase (ii) Carboxypeptidase (iii) Succinic dehydrogenase (iv) Peroxidase

Question

Which of the following enzymes has/have heme as a prosthetic group? (i) Catalase (ii) Carboxypeptidase (iii) Succinic dehydrogenase (iv) Peroxidase (A) (i) only (B) (i) and (ii) only (C) (ii) and (iii) only (D) (iii) and (iv) only

Tardigrade Admin · Accepted Answer

Prosthetic groups are nonprotein organic cofactors firmly attached to apoenzymes, e.g., heme (= haem), biotin, pyridoxal phosphate. Heme (= haem) is iron containing prosthetic group in cytochromes, haemoglobin, myoglobin, catalase and peroxidase.

Q. Which of the following enzymes has/have heme as a prosthetic group?
(i) Catalase
(ii) Carboxypeptidase
(iii) Succinic dehydrogenase
(iv) Peroxidase

(i) only

(i) and (ii) only

(ii) and (iii) only

(iii) and (iv) only

(i) and (iv) only

Prosthetic groups are nonprotein organic cofactors firmly attached to apoenzymes, e.g., heme (= haem), biotin, pyridoxal phosphate. Heme (= haem) is iron containing prosthetic group in cytochromes, haemoglobin, myoglobin, catalase and peroxidase.

Q. Which of the following enzymes has/have heme as a prosthetic group? (i) Catalase (ii) Carboxypeptidase (iii) Succinic dehydrogenase (iv) Peroxidase

(i) only

(i) and (ii) only

(ii) and (iii) only

(iii) and (iv) only

(i) and (iv) only

Prosthetic groups are nonprotein organic cofactors firmly attached to apoenzymes, e.g., heme (= haem), biotin, pyridoxal phosphate. Heme (= haem) is iron containing prosthetic group in cytochromes, haemoglobin, myoglobin, catalase and peroxidase.

Q. Which of the following enzymes has/have heme as a prosthetic group?
(i) Catalase
(ii) Carboxypeptidase
(iii) Succinic dehydrogenase
(iv) Peroxidase