What is the electron transport chain of a chloroplast?
What is the electron transport chain of a chloroplast?
The electron transport chain moves protons across the thylakoid membrane into the lumen. At the same time, splitting of water adds protons to the lumen, and reduction of NADPH removes protons from the stroma. The net result is a low pH in the thylakoid lumen, and a high pH in the stroma.
Where does electron transport chain occur in photosynthesis?
thylakoid membrane
The photosystems and electron transport chain components are embedded in the thylakoid membrane. When light is absorbed by one of the pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center.
What is the site of electron transport chain in mitochondria?
The electron transport chain is a series of proteins and organic molecules found in the inner membrane of the mitochondria.
Where are electron transport chains found in plant cells?
Where are the molecules of the electron transport chain found in plant cells? In thylakoids, protons travel through ATP synthase from the thylakoid space to the stroma.
What is the function of ATP synthase in the electron transport chain?
During electron transport, the participating protein complexes push protons from the matrix out to the intermembrane space. This creates a concentration gradient of protons that another protein complex, called ATP synthase, uses to power synthesis of the energy carrier molecule ATP (Figure 2).
Does the electron transport chain produce water?
Electron Transport Chain Electrons are passed rapidly from one component to the next to the endpoint of the chain, where the electrons reduce molecular oxygen, producing water.
What is the main purpose of the electron transport chain in photosynthesis?
Photosynthetic electron transport converts free and abundant solar energy into reducing power and chemical energy for producing biomass and biofuels through transferring electrons sequentially from H2O through Photosystem II and then Photosystem I to NADP+ in chloroplasts of higher plants and photosynthetic algae or in …
Where is the electron transport chain located in respiration?
mitochondria
The electron transport chain is the last stage of the respiration pathway. It is the stage that produces the most ATP molecules. The electron transport chain is a collection of carrier proteins found on the inner membrane of mitochondria.
What is the electron transport chain part of?
The electron transport chain (Figure 1) is the last component of aerobic respiration and is the only part of glucose metabolism that uses atmospheric oxygen. Oxygen continuously diffuses into plants; in animals, it enters the body through the respiratory system.
Is any ATP used in the electron transport chain?
No ATP is produced in the electron transport chain. Is any ATP used in the electron transport chain? No, the electrons provide energy. The name of the embedded protein that provides a channel for the hydrogen ions to pass through the membrane is ATP synthase.
Does the electron transport chain occur in plant cells?
The Electron Transport Chain Inside the mitochondria of animal or plant cells, a series of chemical reactions produce ATP. This ATP contains chemical energy, and is the main “fuel” that cells use to stay alive.
What are the three locations of electron transport chains in cells?
Therefore, the direct answer to your question is the chloroplast (2 electron transport photophosphorylation chains) and the mitochondrion (electron transport phosphorylation).
What molecules supply electrons to an electron transport chain?
The electron transport chain is a collection of proteins found on the inner membrane of mitochondria. NADH release the hydrogen ions and electrons into the transport chain.
What is the purpose of the electron transport chain?
The main purpose of the electron transport chain is to build up a surplus of hydrogen ions (protons) in the intermembrane space so that there will be a concentration gradient compared to the matrix of the mitochondria.
What does electron transport chain stand for?
An electron transport chain (ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H+ ions) across a membrane.
What happens during the electron transport chain?
An electron transport chain ( ETC) is a series of complexes that transfer electrons from electron donors to electron acceptors via redox (both reduction and oxidation occurring simultaneously) reactions, and couples this electron transfer with the transfer of protons (H + ions) across a membrane.