1. Heterocysts maintain photosystem I, allowing them to generate cyclic photophosphorylation . 2. The ATP synthase uses the chemiosmotic potential to make ATP during photophosphorylation . 3. By replenishing lost electrons with electrons from the cyclic photophosphorylation . 4. If electrons only pass through once, the process is termed noncyclic photophosphorylation . 5. The total equation for photophosphorylation is shown: 6. The chloroplast ferredoxin is involved in both cyclic and non-cyclic photophosphorylation reactions of photosynthesis. 7. In functional chloroplasts, it may be involved in oxygen chemistry like mediation of pseudocyclic photophosphorylation . 8. C . raciborskii does maintain photosystem I, allowing it to generate ATP by cyclic photophosphorylation . 9. This potential energy is used for the synthesis of ATP by oxidative phosphorylation or photophosphorylation , respectively. 10. In non-cyclic photophosphorylation , ferredoxin is the last electron acceptor thus reducing the enzyme NADP + reductase.
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