The breakdown products of heme go through several biochemical degradations to form:
a. Bilirubin
b. Protoporphyrin
c. Amino acids
d. Haptoglobin
ANS: A
After phagocytosis by the splenic macrophages, hemoglobin is released. It is broken down into its component parts of globin chains and heme. Heme is further degraded in a series of steps eventually forming bilirubin, which is taken to the liver and further processed. Globin chain amino acids are returned to the amino acid pool for use in protein synthesis.
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