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how many H+ ions required for 1 ATP production chemiosmosis hypothesis in photosynthesis
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how many H+ ions required for 1 ATP production chemiosmosis hypothesis...
How many H+ ions are required for 1 ATP production in chemiosmosis hypothesis in photosynthesis?


The chemiosmosis hypothesis explains the process of ATP production in photosynthesis. During this process, the energy from the electron transport chain is used to pump protons (H+) across the thylakoid membrane, creating a proton gradient. The gradient is then used to power the ATP synthase enzyme, which produces ATP. The number of H+ ions required for 1 ATP production can be calculated as follows:


Step 1: Calculate the number of H+ ions required to produce NADPH


  • For every 2 electrons that pass through the electron transport chain, 1 NADPH molecule is produced.

  • For each NADPH molecule produced, 1 H+ ion is removed from the stroma and added to the thylakoid lumen.

  • Therefore, to produce 1 NADPH molecule, 1 H+ ion is required.



Step 2: Calculate the number of H+ ions required to produce ATP


  • For each ATP molecule produced, 3 H+ ions are required.

  • This is because the ATP synthase enzyme requires 3 H+ ions to produce 1 ATP molecule.



Step 3: Calculate the total number of H+ ions required for 1 ATP production


  • From step 1, we know that 1 H+ ion is required to produce 1 NADPH molecule.

  • From step 2, we know that 3 H+ ions are required to produce 1 ATP molecule.

  • Therefore, to produce 1 ATP molecule, a total of 4 H+ ions are required (1 for NADPH and 3 for ATP).



In summary, 4 H+ ions are required for 1 ATP production in the chemiosmosis hypothesis in photosynthesis. This process is crucial for the production of energy in plants and other photosynthetic organisms.
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