Question

in the breakdown of hemoglobin, the globin chains
multiple choice
are converted into biliverdin by macrophages
are converted into bilirubin by macrophages
are broken down by macrophages into amino acids
are stored in various tissues
contribute to the color of feces

Explanation:

When hemoglobin breaks down, macrophages break down the globin chains into amino acids. Bilirubin and biliverdin are products of heme breakdown, not globin. Storing in tissues is not the fate of globin chains in this context, and feces color is related to bile pigments (from heme), not globin.

Answer:

are broken down by macrophages into amino acids