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)
• C. (ii) and (iii)
• D. (iii) and (iv)
• E. (i) and (iv)

Answer 1

The correct option is E (i) and (iv)

Co-enzymes tightly or covalently bonded to enzymes are called prosthetic groups, e.g., pyridoxal phosphate, heme, biotin. Heme is a prosthetic group containing ferrous ion. It is important for a number of biologically important hemoproteins such as myoglobin, cytochrome oxidase, catalase and peroxidase. Thus, the correct answer is option E.