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What does the light reaction require that the dark reaction does not?
Wiki User
∙ 13y ago
the light reaction requires energy from the sun in the form of photons. these photons excite the electrons in photosystem II and results in the electrons passing through a series of redox reactions (creating a proton gradient that through chemiosmosis turns ADP into ATP) and replaces the missing electrons of photosystem I. then when photons hit photosystem II the electrons are re-energized and go through the reaction to reach NADP+ and though NADP+ reductase are accepted by the newly formed NADPH.
so in short the products of the light reaction is what is required by the dark reaction (as well as 3 CO2)
Wiki User
∙ 13y ago
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Why must the light reaction occur before the dark reaction?
The bi product of the light reaction triggers the dark reaction.
Which reaction makes ADP light or dark?
It is the light reaction. Then they moves to dark reaction
Do the dark reactions occur in the thylakoids?
A dark reaction is done in the Calvin Cycle. Light is not needed at the time of the dark reaction but it also doesn't hinder the reaction if there is light at the time.So in short. Yes.
Why light reaction first before dark reaction?
There must be a light reaction first before dark reaction. This is so that there is something to be compared.
Why is it light reaction presequisite to the dark reaction?
without ATP and (NADPH +H+) WE cannot run the dark reaction.and this molecules are produced from the light reaction.
Does the dark reaction of photosynthesis require direct sun light energy to be proceed?
No it does not, because it is in the dark area which does not require light.
Why must the light reaction occur before the dark reaction?
The bi product of the light reaction triggers the dark reaction.
Which reaction makes ADP light or dark?
It is the light reaction. Then they moves to dark reaction
Why is possible for Calvin cycle to occur in the dark?
The Calvin cycle is called the dark cycle because it does not require light to proceed. Unlike light reactions, the Calvin cycle is a light-independent reaction, which means it can and will occur in the dark as well as the light.
Why is light reaction of photosynthesis essential for the dark reaction to proceed?
why light reaction of photosynthesis is essential before the dark reaction can procced?
Do the dark reactions occur in the thylakoids?
A dark reaction is done in the Calvin Cycle. Light is not needed at the time of the dark reaction but it also doesn't hinder the reaction if there is light at the time.So in short. Yes.
What is dark reaction process?
* the second phase of photosynthesis, that does not require the presence of light, during which ATP releases stored energy that is used to convert carbon dioxide molecules into sugars and other nutrients * The dark reactions of photosynthesis doesn't require the presence of light to photosynthesize. * The second stage of photosynthesis, not requiring light to occur, and during which energy released from ATP drives the production of organic molecules from carbon dioxide. * there are 2 main stages in potosyntesis. the light reaction occurs only in the presence of light while dark reaction happens both when there is light and when it is dark.
Why light reaction first before dark reaction?
There must be a light reaction first before dark reaction. This is so that there is something to be compared.
How are Light and Dark reaction the reverse of each other?
Light reactions require light to fix photons into Redox molecules. These are temporary, and to fix this energy for long term storage, the plants use the 'dark reactions' such as the Calvin cycle. It is sort of a misnomer, because they don't HAVE to occur in the dark, just that they don't require light.
Why is it light reaction presequisite to the dark reaction?
without ATP and (NADPH +H+) WE cannot run the dark reaction.and this molecules are produced from the light reaction.
How does light and dark reactions correspond with parts of a leaf?
Dark reaction needs energy. this energy is supplied by light reaction
What are the two reaction phases in photosynthesis?
light reaction and dark reaction
