Noncyclic photosynthetic electron transport leads to the translocation of 3 H* per e and cyclic photosynthetic electron transport leads to the translocation of 2 H* per e". Assuming that CF¡CF0ATP synthase yields 6 ATP per 14 H*, calculate the photosynthetic efficiency of ATP synthesis. Noncyclic efficiency = quanta/ATP Cyclic efficiency = quanta/ATP

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A:

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A:

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Nitrogen metabolism

Nitrogen metabolism is the synthesis, utilization or uptake, breakdown, and excretion of nitrogenous compounds in the body. The nitrogen metabolism encompasses nitrogen fixation, biosynthesis, and the breakdown of amino acids, purines, and pyrimidine. Since nitrogen-containing compounds are required for various life processes, nitrogen is an important element of life.