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What is Chemiosmotic hypothesis?? |
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Answer» Thank u for your help \tChemiosmotic hypothesis explain the mechanism of ATP synthesis in chloroplast.\tIn photosynthesis, ATP synthesis is linked to development of a proton gradient across a membrane.\tThe protons that are produced by the splitting of water are accumulated inside of membrane of thylakoids (in lumen).\tAs the electron moves through the photosystem, protons are transported across the membrane.\tNADP reductase enzyme is located on the stroma side of the membrane, along with electrons from the acceptor it removes H+ from the stroma during reduction of NADPH + H+.\tThis creates proton gradients across the thylakoid membrane as well as a measurable decrease in pH in the lumen.\tATPase has a channel that allows diffusion of protons back to stroma across the membrane.\xa0\tThis releases energy to activate ATPase enzyme that catalyses the formation of ATP. |
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