Which of the following is a shared characteristics of photophosphorylation and oxidative phosphorylation?
A. both utilize a proton gradient established by an electron transport chain to power ATP synthetase
B. both consume oxygen and produce carbon dioxide
C. both involve substrate-level phosphorylation being the main route of ATP production
D. both produce metabolic water
E. Both use high-energy electron carriers to shuttle electrons within organelles of the cell
F. both can be performed by plant cells
