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The movement of electrons down a concentration gradient via electron transport membrane is used to generate what?
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∙ 9y ago
ATP.
Wiki User
∙ 10y ago
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What will happen to NADH in the electron transport train?
NADH is oxidized in the electron transport chain, meaning it loses electrons. These electrons are transferred through a series of protein complexes to generate ATP. NADH is converted back to its original form, NAD+, making it available to accept more electrons in subsequent metabolic reactions.
Why do organisms need a final electron acceptor?
A final electron acceptor that is a stronger oxidizing agent than the last oxidizing agent in the electron transport chain is needed to remove low-energy electrons from the chain so that new high energy electrons can enter the chain to generate more ATPs. Without a final electron acceptor the electron transport chain will be backed up with low energy electrons and eventually no ATP can be generated since no new electron can enter the chain.
Which accumulates in the inter membrane space of the mitochondrion during electron transport?
During electron transport in the mitochondrion, protons (H+) accumulate in the intermembrane space. This happens as electrons are transferred through the electron transport chain, creating a proton gradient across the inner mitochondrial membrane. This gradient of protons is later utilized by ATP synthase to generate ATP through oxidative phosphorylation.
Similarities between photophosphorylation and oxidative photophosphorylation?
The chemiosmosis theory postulates that living cells produce ATP from a proton gradient across a membrane by an enzyme called ATP synthase. Animals generate this proton gradient with the mitochondrial electron transport chain. When reductants (NADH, FADH2) give up their electrons to the electron transport chain, the electrons move to increasingly stronger oxidizing agents, using the released energy to pump protons across the mitochondrial inner membrane. Plants, however, generate the proton gradient directly with the photosystems and the photosynthetic electron transport chain. When the photosystem becomes excited, water is split into protons, oxygen and electrons. The electrons are then passed into the photosynthetic electron transport chain, which is analogous to the mitochondrial electron transport chain in that it also uses the energy of the oxidation reactions to pump protons across the thylakoid membrane. The end result is the same, however, because the proton gradient generates proton motive force, which is then used to synthesize ATP with ATP synthase.
The transfer of high-energy electrons down the electron transport chain causes what to be transported across the mitochondrial membrane?
The electron movement causes H+ ions to be transported to the cystolic side of the mitochondrial membrane from the mitochondial matrix. This creates the electrochemical gradient that is used to generate chemical energy (ATP from ADP)
What will happen to NADH in the electron transport train?
NADH is oxidized in the electron transport chain, meaning it loses electrons. These electrons are transferred through a series of protein complexes to generate ATP. NADH is converted back to its original form, NAD+, making it available to accept more electrons in subsequent metabolic reactions.
Why do organisms need a final electron acceptor?
A final electron acceptor that is a stronger oxidizing agent than the last oxidizing agent in the electron transport chain is needed to remove low-energy electrons from the chain so that new high energy electrons can enter the chain to generate more ATPs. Without a final electron acceptor the electron transport chain will be backed up with low energy electrons and eventually no ATP can be generated since no new electron can enter the chain.
What is the functions of electrons in the electron transport chain?
Basically, to provide the motive force so that protons can be pumped into the outer lumen of the mitochondria. There they will fall down their concentration gradient through the ATP-synthase, thus generating ATP.
Why is the final process of aerobic respiration called the electron transport chain?
Oxidation in chemistry is when an electron is stripped from an atom or molecule. In this case, an electron is stripped from the phosphate group in ATP so it can be used for energy, hence oxidative phosphorylation. The electron then moves through several processes that generate energy the cell can use. That's why it is most commonly referred to as the electron transport chain.
Which accumulates in the inter membrane space of the mitochondrion during electron transport?
During electron transport in the mitochondrion, protons (H+) accumulate in the intermembrane space. This happens as electrons are transferred through the electron transport chain, creating a proton gradient across the inner mitochondrial membrane. This gradient of protons is later utilized by ATP synthase to generate ATP through oxidative phosphorylation.
What is the primary objective of the electron transport chain?
To provide the motive force that pumps protons into the outer lumen of the mitochondria. Where the protons will fall down their concentration gradient through the ATP synthase and generate ATP.
What splits H20 to generate electrons and produce o2?
Nothing splits H2O to generate electrons... electrons are introduced to the electron-hungry oxygen atom so that it stops sharing electrons with the hydrogen... electrons are used in splitting water, rather than produced.-ScrafemoreTech
Similarities between photophosphorylation and oxidative photophosphorylation?
The chemiosmosis theory postulates that living cells produce ATP from a proton gradient across a membrane by an enzyme called ATP synthase. Animals generate this proton gradient with the mitochondrial electron transport chain. When reductants (NADH, FADH2) give up their electrons to the electron transport chain, the electrons move to increasingly stronger oxidizing agents, using the released energy to pump protons across the mitochondrial inner membrane. Plants, however, generate the proton gradient directly with the photosystems and the photosynthetic electron transport chain. When the photosystem becomes excited, water is split into protons, oxygen and electrons. The electrons are then passed into the photosynthetic electron transport chain, which is analogous to the mitochondrial electron transport chain in that it also uses the energy of the oxidation reactions to pump protons across the thylakoid membrane. The end result is the same, however, because the proton gradient generates proton motive force, which is then used to synthesize ATP with ATP synthase.
The transfer of high-energy electrons down the electron transport chain causes what to be transported across the mitochondrial membrane?
The electron movement causes H+ ions to be transported to the cystolic side of the mitochondrial membrane from the mitochondial matrix. This creates the electrochemical gradient that is used to generate chemical energy (ATP from ADP)
Why is electron transport so critical in the process of cellular respiration?
Electron transport is a critical process in cellular respiration because it provides energy for cells in the form of ATP. Electron transport occurs in the mitochondria of cells and involves the transfer of electrons from one molecule to another. The energy generated from this process is used to synthesize ATP the main energy currency of cells. This energy is then used to power a variety of cellular processes such as DNA replication and protein synthesis. Without electron transport cells would not be able to generate the energy required for these essential processes.Electron transport is essential for cellular respiration because it: Moves electrons from one molecule to another Generates energy in the form of ATP Powers a variety of cellular processesIn conclusion electron transport is a critical process in cellular respiration because it provides cells with the energy required for essential processes. Without it cells would not be able to generate the energy required for these processes and would not be able to survive.
Where in the mitochondria does the ETC occur?
The electron transport chain (ETC) occurs in the inner mitochondrial membrane. It is comprised of a series of protein complexes embedded in the membrane, through which electrons are passed along to generate ATP.
What is the purpose of light reactions?
it includes the passage of electrons along electron transport chain and produces NADPH and oxygen, and the synthesis of ATP. it includes the passage of electrons along electron transport chain and produces NADPH and oxygen, and the synthesis of ATP.
