Identify the electron-transport complex (I,II,III, or IV) in which the following reactions occur.
a. 4H^( ) O_(2) 4e^(-)longrightarrow2H_(2)O
complex II
complex III
complex 1
complex IV
c. NADH H^( ) CoQlongrightarrow NAD^( ) CoQH_(2)
complex I
complex II
complex III
complex IV
b. FADH_(2) CoQlongrightarrowFAD CoQH_(2)
complex II
complex I
complex III
complex IV
d.
CoQH_(2) 2cyt<(Fe^(3))longrightarrowCoQ 2cyt<(Fe^(2)) 2H^( )
complex I
complex III
complex 11
complex IV