The coordinated nitrogen atoms in the heme prosthetic group have _____ character, which prevents conversion of the heme iron from the _____ state to the _____ state Question 13 options: a) electron-accepting; Fe2+; Fe3+ b) electron-donating; Fe3+; Fe2+ c) electron-donating; Fe2+; Fe3+ d) electron-accepting; Fe+; Fe0 e) electron-accepting; Fe3+; Fe2+
c) electron-donating; Fe2+; Fe3+
The correct option is: c) electron-donating; Fe2+; Fe3+.
The coordinated nitrogen atoms in the heme prosthetic group have electron-donating character, which prevents conversion of the heme iron from the Fe2+ state to the Fe3+ state.