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What event contributes directly to the creation of a proton gradient across the thylakoid membrane?
Wiki User
∙ 11y ago
the flow of electrons through electron transport chain II
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoThe concentration of protons (H+).
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Where in the chloroplast is the chemiosmotic gradient developed?
In the thylakoid between photosystem II and photosystem I.
The creation of a proton gradient occures during which biochemical pathway?
All of the following are associated with chemiosmosis EXCEPT Answer creation of a proton gradient. beta-oxidation. phosphorylation of 34 molecules of ADP. oxidative phosphorylation. ATP synthase.
Why is diffusion affected by a decrease in concentrated gradient?
Diffusion is affected by a decrease in concentration gradient because concentration gradient is directly proportional to the rate of diffusion. A decrease in concentration gradient also lowers the rate of diffusion.
What is the effect of ammonium chloride to chloroplast?
NH3 enters the thylakoid lumen and eats the protons, by binding them it and decreases the proton gradient compared to the outside of the lumen. This "uncouples" the proton motive and reduces ATP synthesis
Explain how the light reactions would be affected if there were no concentration gradient of protons across the thylakoid membrane?
The concentration gradient of protons is potential energy and is harnessed by an enzyme called ATP synthase. ATP synthase converts the potential energy of the proton concentration gradient into chemical energy stored in ATP (the process is called chemiosmosis). So without the protons, no ATP would be made, and therefore no light reaction would occur.
In photosynthesis an H plus ion gradient froms across what?
across the thylakoid membrane
Energy used to establish the protein gradient across the thylakoid membrane comes from where?
Synthesis of ATP
Where in the chloroplast is the chemiosmotic gradient developed?
In the thylakoid between photosystem II and photosystem I.
Were does the energy to move hydrogen ions across the thylakoid membrane come from?
where does the energy used to establish the proton gradient across the thylakoid membrane come from? In other words, from splitting of water. well that's not what he said but there you go.
What releases energy that is used to pump hydrogen ions from the stroma into the thylakoid compartment?
The electron transport chain releases energy in order to pump protons (hydrogen ions) from the stroma into the thylakoid compartment, creating a proton gradient within the thylakoid membrane.
How does the structure of the chloroplast enable it to build up a concentration gradient of protons?
The membrane inside the thylakoid of the chloroplast pumps H+ ions from the outside compartment (stroma) to the inside (lumen). This builds the gradient. The electrons are pumped using energy released from a high energy electron which was energized through light absorption. This electron comes from the breakdown of water.
The creation of a proton gradient occures during which biochemical pathway?
All of the following are associated with chemiosmosis EXCEPT Answer creation of a proton gradient. beta-oxidation. phosphorylation of 34 molecules of ADP. oxidative phosphorylation. ATP synthase.
What is the of ATP synthase in photosynthesis?
The pigment molecules and electron transport chains involved in the light-dependent reactions of photosynthesis are embedded in the thylakoid membrane. As energy is released from electrons traveling through the chain of acceptors, it is used to pump protons (that is, H+ ions) from the stroma of the chloroplast across the thylakoid membrane and into the center of the thylakoid. Thus, protons accumlate within the thylakoids, lowering the pH of the thylakoid interior and making it more acidic. A proton gradient possesses potential energy that can be used to form ATP.Protons are prevented from diffusing out of the thylakoid because the thylakoid membrane is impermeable to protons except at certain points bridged by an enzyme called ATP synthase. This protein extends across the thylakoid membrane and forms a channel through which protons can leave the thylakoid. As the protons pass through ATP synthetase, energy is released, and this energy is tapped by ATP synthase to form ATP from ADP and inorganic phosphate. The coupling of ATP synthesis to a protein gradient formed by energy released during electron transport is called chemiosmosis.
What is the role of synthase in photosynthesis?
The pigment molecules and electron transport chains involved in the light-dependent reactions of photosynthesis are embedded in the thylakoid membrane. As energy is released from electrons traveling through the chain of acceptors, it is used to pump protons (that is, H+ ions) from the stroma of the chloroplast across the thylakoid membrane and into the center of the thylakoid. Thus, protons accumlate within the thylakoids, lowering the pH of the thylakoid interior and making it more acidic. A proton gradient possesses potential energy that can be used to form ATP.Protons are prevented from diffusing out of the thylakoid because the thylakoid membrane is impermeable to protons except at certain points bridged by an enzyme called ATP synthase. This protein extends across the thylakoid membrane and forms a channel through which protons can leave the thylakoid. As the protons pass through ATP synthetase, energy is released, and this energy is tapped by ATP synthase to form ATP from ADP and inorganic phosphate. The coupling of ATP synthesis to a protein gradient formed by energy released during electron transport is called chemiosmosis.
Why is diffusion affected by a decrease in concentrated gradient?
Diffusion is affected by a decrease in concentration gradient because concentration gradient is directly proportional to the rate of diffusion. A decrease in concentration gradient also lowers the rate of diffusion.
Which weather condition most directly determines wind speeds at Earths surface?
Air pressure Gradient
What is the role if ATP synthase in photosynthesis?
The pigment molecules and electron transport chains involved in the light-dependent reactions of photosynthesis are embedded in the thylakoid membrane. As energy is released from electrons traveling through the chain of acceptors, it is used to pump protons (that is, H+ ions) from the stroma of the chloroplast across the thylakoid membrane and into the center of the thylakoid. Thus, protons accumlate within the thylakoids, lowering the pH of the thylakoid interior and making it more acidic. A proton gradient possesses potential energy that can be used to form ATP.Protons are prevented from diffusing out of the thylakoid because the thylakoid membrane is impermeable to protons except at certain points bridged by an enzyme called ATP synthase. This protein extends across the thylakoid membrane and forms a channel through which protons can leave the thylakoid. As the protons pass through ATP synthetase, energy is released, and this energy is tapped by ATP synthase to form ATP from ADP and inorganic phosphate. The coupling of ATP synthesis to a protein gradient formed by energy released during electron transport is called chemiosmosis.
