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All of the following are steps of photosynthesis EXCEPT

Explanation

Chlorophyll is not absorbed through plant roots; it is synthesized within plant cells. Photolysis, where a photon of light is absorbed by the chlorophyll pigment, which then is in an excited (higher energy) state, is the first step in the photosynthetic process. The light reaction is a decomposition reaction that separates water molecules into hydrogen and oxygen atoms utilizing the energy from the excited chlorophyll pigment. Oxygen that is not needed by the cell combines to form ${O_2}$ (gas) and is released into the environment. The free hydrogen is grabbed and held by a particular molecule (called the hydrogen acceptor) until it is needed.

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\({K_{\rm{w}}} = \left[ {{H_3}{O^ + }_{(aq)}} \right]\left[ {O{H^ - }_{(aq)}} \right] = {10^{ - 14}}at25{}^oC\)

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