The electron transport chain is a series of protein complexes and electron carrier molecules within the inner membrane of mitochondria that generate ATP for energy. The electron transport chain is a collection of proteins found on the inner membrane of mitochondria. Effects of magnesium and chloride ions on light-induced electron transport in membrane fragments from a blue-green alga. Which of the following best explains the mechanism by which photosystem I (PS I) and photosystem II (PS II) operate during linear electron flow? Schematic of electron transport and proton translocation in the thylakoid membrane. Explanation: Water supply the initial electron in photosynthesis. energizes an electron in the green organic pigment chlorophyll, enabling electron to move along an electron-transport chain in the thylakoid membrane. Biochim Biophys Acta. ATP synthase uses this electrochemical gradient to make ATP. During the electron transport process H+ is pumped across the thylakoid membrane, and resulting At the same time, splitting of water adds protons to the lumen, and reduction of NADPH removes protons from the stroma. In eukaryotic organisms, the electron transport chain is found embedded in the inner membrane of the mitochondria, in bacteria it is found in the cell membrane, and in case of plant cells, it is present in the thylakoid membrane of the chloroplasts. At the same time, splitting of water adds protons to the lumen, and reduction of NADPH removes protons from the stroma. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water. The net result is a low pH in the thylakoid lumen, and a high pH in the stroma. 1)Electrons flow from PS I to PS II, gaining potential energy to be later used in … The thylakoid membrane is where much of this occurs, and we will discuss its role here. reation of a pH gradient by pumping protons across the thylakoid membrane Carbon fixation in the stroma Removal of electrons from chlorophyll molecules Reduction of NADP+ molecules ... oxidation of electron transport chain between the two photosystems light absorbtion reduction of primary electron acceptor. The net result is a low pH in the thylakoid lumen, and a high pH in the stroma. The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH 2 to molecular oxygen. ; Electrons are passed along the chain from protein complex to protein complex until they are donated to … In cellular respiration, a molecule of _____ supplies the electron that travels through the electron transport chain. Biochim Biophys Acta. In photosynthesis, the electrons that travel through the electron transport chain in the thylakoid membrane comes from water. The electron transport chain moves protons across the thylakoid membrane into the lumen. Here is the rest of the question: In the thylakoid membrane, two photosystems are involved in the light reactions of photosynthesis. 1976 Feb 16; 423 (2):313–322. In photosynthesis, the electron that travels through the electron transport chain in the thylakoid membrane comes from _____. 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