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Where does the H ions by kid up during the light dependent reactions?
Wiki User
∙ 8y ago
Well the hydrogen in the water molecules lose their electrons to photosystem II and oxygen gas is formed because oxygen must exists as a molecule (or else it is unstable), the electrons use the sunlight energy collected by the chlorophyll molecules to enter a transport chain which then they enter the cytochrome in which the electrons then enter another transport chain causing Hydrogen ions to enter the thykaloids from the stroma. This causes a concentration gradient that powers the ATP synthases to produce ATP. The low energy electrons enter photosystem 1 and then use the sunlight energy to enter the transport chain which travels to NADP Reductase where the electrons are attached to the NADP+ which then turns into NADPH.
Wiki User
∙ 8y ago
Wiki User
∙ 14y agoWater is broken apart to release oxygen (O2), which is a product of photosynthesis, and two hydrogen ions. The electrons are taken from the hydrogens to form hydrogen ions (H+). The electrons replaced those lost in the chlorophyll when it absorbs one photon of light.
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∙ 13y agoThe hydrogen is used to change NADP+ into NADPH2
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∙ 14y ago6 CO2 + 6 H2O turns to C6H12O6 + 6O2, so the hydrogen becomes part of the glucose, or sugar
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∙ 11y agolight,water,oxygen,atp,nadph are produced in the light dependent process
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∙ 9y agoHydrogen ions are used in the formation of NADPH which are later used in light independent reaction
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∙ 13y agoRunescape.com happens tbh
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Is not produced in the light-dependent reactions of photosynthesis A. NADPH B. sugars C. ATP D. oxygen?
hydrogen ions
What Light dependent reactions?
Because the question does not ask photosynthesis, I answer in the meaning of general chemistry: Light just provides energy for a reaction; usually, photons (the light particles) make electrons of the matter to excitate, thus changing the reaction conditions. Otherwise, in photosynthesis, light-dependent reactions produce a proton (H+) gradient flow through thylakoid membrane, thus spinning the ATPase enzyme subunits, thus producing ATP. Besides this, ferredoxin and NADPH is produced. Ferredoxin is very important for certain specific enzymatic reactions and NADPH is the carrier of reduction force (it can give a hydrogen to a chemical/metabolite, for example to malonic acid)
Describe why the indicator reaction is pH dependent?
An indicator reaction is always pH dependent because it involves hydrogen. During the reaction, hydrogen ions are either released or captured during the process.
When does photosynthesis produce oxygen?
Light Dependant ReactionCarbon dioxide + H2O + SUNLIGHT => NaDPH + O2 + ATPThen the NaDPH and the ATP goes to the dark reactions, or the Calvin-Benson Cycle.
Why is water split during the light reactions?
The water splitting step in photosynthesis is critical as a source of hydrogen ions (protons). These provide essential chemical energy to drive later chemical reactions.
During the light dependent reactions H ions build up in the?
Thylakoid space when water molecules are split.
Where do the hydrogen ions comes from for the photosystems of the light-dependent reactions?
splitting of water molecules
Is not produced in the light-dependent reactions of photosynthesis A. NADPH B. sugars C. ATP D. oxygen?
hydrogen ions
What in the role of oxygen in the production of ATP?
Oxygen's RoleAt the end of the electron transport chain in the mitochondria, electrons are donated to oxygen (O2), which combines with hydrogen ions to form water. Without the O2 molecules to accept the electrons, the electron transport chain couldn't function.
Where does the energy come from to make at in the light reactions?
From the motion of the hydrogen ions
What is function and structure of stroma?
The stroma of a plant is the region outside of the thylakoid space. This serves two functions in the both the light-dependent and light-independent (Calvin cycle) reactions. In the light-dependent reactions, the H+ ions that build up within the thylakoid begin to form a concentration gradient between the thylakoid and the stroma. As a result, the H+ ions need to diffuse into the stroma. In order to do this, the ions must travel through an enzyme known as ATP synthase. Once it does, the movement of H+ ions through ATP synthase into the stroma provides energy for ADP to become ATP. The ATP formed is an energy source to power the Calvin cycle. Now, the light-independent (Calvin cycle) reactions occur in the stroma.
Difference between light dependent reactions and light independent reactions in photosynthesis?
I'm assuming you're talking about photosynthesis. The main difference can be seen in the terms. Light dependent need light to react, light independent do not. In the light reactions the photon of light hits the chlorophyll which excites an electron that goes into the electron transport chain. This electron comes from water being split into H+ ions and oxygent gas. A small amount of ATP is produced and NADPH is produced. In the dark reaction, called the Calvin cycle, the ATP and NADPH produced by the light reaction is used to combine RUBP with CO2 to make glucose.
What Light dependent reactions?
Because the question does not ask photosynthesis, I answer in the meaning of general chemistry: Light just provides energy for a reaction; usually, photons (the light particles) make electrons of the matter to excitate, thus changing the reaction conditions. Otherwise, in photosynthesis, light-dependent reactions produce a proton (H+) gradient flow through thylakoid membrane, thus spinning the ATPase enzyme subunits, thus producing ATP. Besides this, ferredoxin and NADPH is produced. Ferredoxin is very important for certain specific enzymatic reactions and NADPH is the carrier of reduction force (it can give a hydrogen to a chemical/metabolite, for example to malonic acid)
What happens to water in the light-dependent reactions?
Water is broken apart to release oxygen (O2), which is a product of photosynthesis, and two hydrogen ions. The electrons are taken from the hydrogens to form hydrogen ions (H+). The electrons replace those lost in the chlorophyll when it absorbed a photon of light and was sent to transfer the high energy to make ATP.
Describe why the indicator reaction is pH dependent?
An indicator reaction is always pH dependent because it involves hydrogen. During the reaction, hydrogen ions are either released or captured during the process.
When does photosynthesis produce oxygen?
Light Dependant ReactionCarbon dioxide + H2O + SUNLIGHT => NaDPH + O2 + ATPThen the NaDPH and the ATP goes to the dark reactions, or the Calvin-Benson Cycle.
What kinds of substance are formed from light dependent?
In plants glucose is mainly formed in presence of light. But there are so many reactions present which need light, i.e H2+I2=2HI , this reaction need light to procced. Also plasma (the 4th form of matter), which is composed of 'ions', which in this context are largely free (unbound) electrons and protons. It can be created by 'photo-ionization', which is 'matter' created by incident light energy
