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The proton gradient or the concentration of positive hydrogen ions in the stroma versus the concentration in the lumen is important because it powers the?
generation of ATP
Why is the proton gradient or the concentration of positive hydrogen ions in the stroma versus the concentration in the lumen important?
The proton gradient across the thylakoid membrane is crucial for ATP production during photosynthesis. It drives ATP synthase to produce ATP from ADP and inorganic phosphate. This process, known as chemiosmosis, is a key mechanism for converting light energy into chemical energy in plants.
Where does a pair of electrons reaches the second electron carrier enough energy has been released to pump a proton from the stroma?
The pair of electrons reaches the cytochrome complex, where energy is released. This energy is used to pump a proton from the stroma into the thylakoid space against a concentration gradient, contributing to the proton gradient that drives ATP synthesis during photosynthesis.
Where else in chloroplasts does chemiosmosis translocates protons from?
Protons are translocated from the stroma to the thylakoid lumen in chloroplasts during chemiosmosis. This creates a proton gradient that is used by ATP synthase to generate ATP through the process of photophosphorylation.
What is the function of the proton pumps in the thylakoid membranes?
Proton pumps in the thylakoid membranes of chloroplasts create a proton gradient by pumping H+ ions from the stroma into the thylakoid lumen during photosynthesis. This gradient is utilized by ATP synthase to produce ATP through chemiosmosis.
The proton gradient or the concentration of positive hydrogen ions in the stroma versus the concentration in the lumen is important because it powers the?
generation of ATP
The proton gradient or the concentration of positive hydrogen ions in the stroma verses the concentration in the lumen is important because it powers the?
generation of ATP Ramon C.
Why is the proton gradient or the concentration of positive hydrogen ions in the stroma versus the concentration in the lumen important?
The proton gradient across the thylakoid membrane is crucial for ATP production during photosynthesis. It drives ATP synthase to produce ATP from ADP and inorganic phosphate. This process, known as chemiosmosis, is a key mechanism for converting light energy into chemical energy in plants.
Where does a pair of electrons reaches the second electron carrier enough energy has been released to pump a proton from the stroma?
The pair of electrons reaches the cytochrome complex, where energy is released. This energy is used to pump a proton from the stroma into the thylakoid space against a concentration gradient, contributing to the proton gradient that drives ATP synthesis during photosynthesis.
When a pair of electrons reaches the second electron carrier enough energy has been released to pump a proton from the stroma to what location?
The proton is pumped from the stroma across the thylakoid membrane, into the thylakoid lumen. This movement of protons creates a proton gradient that is used to generate ATP through chemiosmosis during photosynthesis.
Where else in chloroplasts does chemiosmosis translocates protons from?
Protons are translocated from the stroma to the thylakoid lumen in chloroplasts during chemiosmosis. This creates a proton gradient that is used by ATP synthase to generate ATP through the process of photophosphorylation.
What is the function of the proton pumps in the thylakoid membranes?
Proton pumps in the thylakoid membranes of chloroplasts create a proton gradient by pumping H+ ions from the stroma into the thylakoid lumen during photosynthesis. This gradient is utilized by ATP synthase to produce ATP through chemiosmosis.
What event contributes directly to the creation of a proton gradient across the thylakoid membrane?
The flow of electrons through the photosynthetic electron transport chain contributes directly to the creation of a proton gradient across the thylakoid membrane. As electrons move through the chain, they pump protons from the stroma into the thylakoid lumen, generating the proton gradient used for ATP production during photosynthesis.
What drives the ATP synthase reactions that produced ATP?
The proton gradient produced by the electron transport chain powers ATP production. This process is called chemiosmosis, in which H+ ions from the thylakoid space (in mitochondria they are in the intermembrane space) pass through ATP synthase to areas of lower concentration (in chloroplasts, the stroma, and in mitochondria, the mitochondrial matrix). As they pass through ATP synthase, the catalytic knob of the ATP synthase is turned. The turning of this knob (which is powered by diffusion of H+ ions) powers the anabolic production of ATP.
What releases energy that is used to pump hydrogen ions from the stroma into the thylakoid compartment?
The flow of electrons through the photosystems during photosynthesis releases energy that is used to pump hydrogen ions from the stroma into the thylakoid compartment. This process is driven by the transfer of energy-rich electrons from photosystem II to photosystem I, creating a proton gradient that is essential for ATP production in the light reactions of photosynthesis.
During electron transport the thylakoid space becomes?
During electron transport in the thylakoid membrane, the thylakoid space becomes more acidic (lower pH) as protons are pumped into this space by electron transport chain components, creating a proton gradient. This proton gradient is essential for ATP synthesis during the light reactions of photosynthesis.
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.
