 
			 
			MCQOPTIONS
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				| 1. | The cytochrome c oxidase complex | 
| A. | accepts electrons from cyt c | 
| B. | donates four electrons to O | 
| C. | <sub>2</sub> | 
| D. | pumps protons out of the matrix space | 
| E. | all of these | 
| Answer» E. all of these | |