Plant Structure
If complex III were incorporated into an artificial lipid vesicle in order to demonstrate it's proton translocating ability in isolation, which of the following would be an appropriate electron donor?

Ubiquinol (UQH2)
Cytochrome c oxidase
Cytochrome c peroxidase
Cytochrome c red

ANSWER DOWNLOAD EXAMIANS APP

Plant Structure
Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential?

Electrons always go from reductants with high redox potentials to oxidants with low redox potentials
The rules governing oxidation and reduction apply only in vitro, and not in vivo
Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
None of these

ANSWER DOWNLOAD EXAMIANS APP