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An electron transport chain(ETC) couples a chemical reaction between an electron donor (such as NADH) and an electron acceptor (such as O2) to the transfer of H+ ions across a membrane, through a set of mediating biochemical reactions. These H+ ions are used to produce adenosine triphosphate (ATP), the main energy intermediate in living organisms, as they move back across the membrane. Electron transport chains are used for extracting energy from sunlight (photosynthesis) and from redox reactions such as the oxidation of sugars (respiration).
In chloroplasts, light drives the conversion of water to oxygen and NADP+ to NADPH and a transfer of H+ ions. NADPH is used as an electron donor for carbon fixation. In mitochondria, it is the conversion of oxygen to water, NADH to NAD+ and succinate to fumarate that drives the transfer of H+ ions. While some bacteria have electron transport chains similar to those in chloroplasts or mitochondria, other bacteria use different electron donors and acceptors. Both the respiratory and photosynthetic electron transport chains are major sites of premature electron leakage to oxygen, thus being major sites of superoxide production and drivers of oxidative stress.
The electron transport chain is a series of protein complexes and molecules located in the inner mitochondrial membrane. Its purpose is to generate ATP through the transfer of electrons from molecules like NADH and FADH2 to oxygen, creating a proton gradient that drives ATP synthesis. This process is fundamental for cellular respiration and energy production in most organisms.
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What is the purpose of electron carriers in cellular respiration?
Electron carriers, such as NADH and FADH2, play a critical role in cellular respiration by carrying high-energy electrons from the breakdown of glucose to the electron transport chain. These carriers donate the electrons to the chain, which generates ATP through oxidative phosphorylation. This process is essential for the production of energy in the form of ATP for the cell.
How does cellular respiration in eukaryotic cells differ from cellular respiration in prokayotic cells?
Cellular respiration in eukaryotic cells occurs in the mitochondria, while in prokaryotic cells it occurs in the cell membrane or cytoplasm. Eukaryotic cells have multiple stages of respiration (glycolysis, Krebs cycle, electron transport chain), whereas prokaryotic cells may only have glycolysis and the electron transport chain. Eukaryotic cells produce more ATP through cellular respiration compared to prokaryotic cells.
During cell respiration what is the purpose of NAD and FAD?
NAD and FAD are electron carriers that play a key role in transferring electrons from the citric acid cycle and glycolysis to the electron transport chain. This transfer of electrons helps generate ATP, the energy currency of the cell, through oxidative phosphorylation. NADH and FADH2 are reduced forms of these molecules that donate electrons to the electron transport chain to produce energy.
What is the purpose of light reactions?
The purpose of light reactions in photosynthesis is to capture and convert light energy into chemical energy in the form of ATP and NADPH molecules. These energy-rich molecules are then used in the subsequent dark reactions to synthesize glucose and other carbohydrates.
Which microscope is use to study internal parts of a cell?
An electron microscope is typically used to study the internal parts of a cell because of its high resolution and magnification capabilities. Transmission electron microscopes (TEMs) and scanning electron microscopes (SEMs) are commonly employed for this purpose.
What is the purpose of electron transport?
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Does Electron Transport supply or store energy?
Electron transport in the mitochondria supplies energy by generating ATP through the transfer of electrons along the electron transport chain.
What is the main purpose of a car?
the main purpose of a car is to transport people & belongings to another location from where you started
What is the purpose of the electrons in cellular respiration?
The purpose of electron carriers such as NADH and FADH2 is to dump electrons at the electron transport chain. This creates a proton gradient and allows oxidative phosphorylation to take place.
What is the purpose of the folds in mitochondria inner sac?
It is to carry out electron transport chain. The last step of respiration
What is the purpose of electronic transport chain?
To use energy from the passing of electrons in electron carriers into a high concentration of hydrogen ions
What is the purpose of embedding the electron transport chain in the membrane of an organism?
The purpose of embedding the electron transport chain in the membrane is to create a proton gradient across the membrane that can be used to generate ATP through chemiosmosis. This process is essential for cellular respiration and energy production in organisms.
In the electron transport chain the main purpose of the we breathe is to keep electrons moving along from the first to the last chemical carreir?
nitrogen
In an electron transport chain what is the name of the main purpose you breathe to keep electrons moving along from the first to the last chemical carrier?
Oxygen
What is the purpose of electron carriers in cellular respiration?
Electron carriers, such as NADH and FADH2, play a critical role in cellular respiration by carrying high-energy electrons from the breakdown of glucose to the electron transport chain. These carriers donate the electrons to the chain, which generates ATP through oxidative phosphorylation. This process is essential for the production of energy in the form of ATP for the cell.
What is the purpose of electron transport chain in the cell?
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What is the electron configuration pattern purpose?
The purpose of an electron configuration pattern is to know what all the electrons are. love ya'll!!
