The Reaction Catalyzed by Nitrite Reductase Requires _______ Electrons and Is

Multiple Choice

The reaction catalyzed by nitrite reductase requires _______ electrons and is summarized as _____________.

A) 2; NO₃^- $\rarr$ NO₂^-
B) 2; NO₂^- $\rarr$ NO^-
C) 4; NO₂^- $\rarr$ NO^- $\rarr$ NH₂OH
D) 4; NO₂^- $\rarr$ NO^- $\rarr$ NH₃
E) 6; NO₂^- $\rarr$ NO^- $\rarr$ NH₂OH $\rarr$ NH₃