Photosynthesis and Respiration
The cytochrome c oxidase complex

donates four electrons to O2
all of these
accepts electrons from cyt c
pumps protons out of the matrix space

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Photosynthesis and Respiration
Which of the following statements about energy metabolism is false?

All eukaryotic organisms carry out respiration in the presence of O2
The energy that powers living systems ultimately comes from the sun
Plants provide the water and CO2 that animals need to carry out respiration
All animals in some way rely on plants for their energy

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