Photosynthesis and Respiration
During the light-dependent reactions of photosynthesis, which of the following does not occur?

Splitting of water
Absorption of light energy by photosystems
Carbon dioxide fixation
Release of oxygen

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

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

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