Question 2 of 13

The answer you chose is highlighted in reverse video. The correct answer is in bold.

Protoporphyrin IX.

A. Intermediate in heme synthesis
B. Intermediate in heme degradation

A. A only

B. B only

C. Both A and B

D. Neither A or B

The correct answer is (A).

Comments:

Iron (II) is added to protoporphyrin IX to form heme. In heme degradation, the heme ring is cleaved, producing biliverdin and other products.

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Last modified 1/5/95