1.

When_oxygen_binds_to_a_heme-containing_protein,_the_two_open_coordination_bonds_of_Fe2+_are_occupied_by:$

A. One O atom and one amino acid atom
B. One O<sub>2</sub> molecule and one amino acid atom
C. One O<sub>2</sub> molecule and one heme atom
D. Two O atoms
Answer» C. One O<sub>2</sub> molecule and one heme atom


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