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What does the light independent stage of radioactive tracers mean?
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What happens in the 'dark reaction' of photosynthesis?
Photosynthesis happens in two main stages, called the light-dependent stage and the light-independent stage. The light-independent stage is sometimes called the 'dark' stage. The light-dependent stage can only happen in the light. During this stage light is absorbed and turned into chemical energy (ATP). Oxygen is also produced. The light-independent stage can happen in the light or the dark ie it is independent of light! However, it needs substances made in the light-dependent stage so it cannot happen completely by itself. In the light-independent stage the energy trapped as ATP in the light-dependent stage is used to change carbon dioxide into sugar (glucose). The Calvin cycle converts carbon dioxide to carbohydrate. CO2 --------> (CH2O) This process requires an energy source and a hydrogen source, as well as carbon dioxide. The energy source is ATP. The hydrogen source is NADPH. Both of these substances are produced by the light-dependent reactions. For more details search this site for "calvin cycle", "light dependent" and l"ight independent". See also: http://www.phschool.com/science/biology_place/biocoach/photosynth/calvin1.html
What are the light independent and dependent stages of photosynthesis?
Light dependent reactions produce ATP and NADPH from energy captured from light. Therefore without light it cannot proceed. Light independent reactions fix carbon dioxide into glucose using the ATP and NADPH produced in the light dependent reactions. So light independent reactions can occur without light as long as CO2, ATP and NADPH is present.
Why is the first stage called the light dependent reaction?
it is the first stage because the product of the light dependent reaction is ATP and NADPH+H+ (Nicotinamide Adenine Dinucleotide Phosphate Hydrogen) and these are required in the light independent reaction (calvin-benson cycle) I hope this helps :DDD
What is the first phase of photosynthesis?
The first stage of photosynthesis is called the 'Light Dependant' stage or the photolysis of water. this is when light enters the cell and splits water into hydrogen and oxygen. The oxygen is then released into the atmosphere and the hydrogen is picked up by the hydrogen acceptor NADP becoming reduced NADPH2 which is then used for the next stage of photosynthesis.
What are the two different reaction of photosynthesis and explain each reaction?
These two reactions are: 1. Light reaction or Hill Reaction- in which the photolysis of water takes place to form energy rich compounds like NADPH2 & ATP and O2 is liberated from water. 2. Dark reaction or Blackman reaction- in which the CO2 is assimilated to form carbohydrates by utilizing the energy from the compounds of Hill reaction. It can also be called photosynthesis in the light-dependent stage and light-independent stage (dark stage).
2 stages of photosynthesis?
The 2 stages are light-dependent stage and the light-independent stage. In the light-dependent stage, photolysis of water 12H20 --------> 6O2 + 24H Light energy is converted to Chemical energy In the light-independent stage, enzyme controlled reaction 6CO2 + 24H -----------------> C6H12O6 + 6H20
What is dark face of photosynthesis?
Photosynthesis happens in two main stages, called the light-dependent stage and the light-independent stage. The light-independent stage is sometimes called the 'dark' stage. The light-dependent stage can only happen in the light. During this stage light is absorbed and turned into chemical energy (ATP). Oxygen is also produced. The light-independent stage can happen in the light or the dark ie it is independent of light! However, it needs substances made in the light-dependent stage so it cannot happen completely by itself. In the light-independent stage the energy trapped as ATP in the light-dependent stage is used to change carbon dioxide into sugar (glucose). There are more details to this process which I have covered in another answer: http://wiki.answers.com/Q/What_connects_the_light_dependent_reaction_to_the_light_independent_reaction See also: http://www.phschool.com/science/biology_place/biocoach/photosynth/calvin1.html
What products of the light reaction are used in the light independent stage of photosynthesis?
NADPH and ATP
What are the two stage of photosyntesis?
A series of light-dependent reactions that are temperature independent, and a series of temperature-dependent reactions that are light independent.
What are the two main stages for photosynthesis?
The light dependent stage and the light independent stage.
During which stage of photosynthesis does carbon fixation take place?
During the Light Independent Stage or second stage of photosynthesis.
What happens in the 'dark reaction' of photosynthesis?
Photosynthesis happens in two main stages, called the light-dependent stage and the light-independent stage. The light-independent stage is sometimes called the 'dark' stage. The light-dependent stage can only happen in the light. During this stage light is absorbed and turned into chemical energy (ATP). Oxygen is also produced. The light-independent stage can happen in the light or the dark ie it is independent of light! However, it needs substances made in the light-dependent stage so it cannot happen completely by itself. In the light-independent stage the energy trapped as ATP in the light-dependent stage is used to change carbon dioxide into sugar (glucose). The Calvin cycle converts carbon dioxide to carbohydrate. CO2 --------> (CH2O) This process requires an energy source and a hydrogen source, as well as carbon dioxide. The energy source is ATP. The hydrogen source is NADPH. Both of these substances are produced by the light-dependent reactions. For more details search this site for "calvin cycle", "light dependent" and l"ight independent". See also: http://www.phschool.com/science/biology_place/biocoach/photosynth/calvin1.html
What does photosynthises mean?
Photosynthesis is when plants, algae, cyanobacteria, etc. create energy with the aid of light. The presence of light is what instigates photosynthesis to occur since the "Light-dependent" stage is the first stage. Then there is the "light-independent" stage, which I believe is the calvin-benson cycle.
Name two stages of photosynthesis?
There is the light-dependent stage, where sunlight interacts with choloropyll to set up an electron-transport chain, then there is the chemical stage, where glucose molecules are synthesized from CO2 and H2O.
Where does the energy for the light independent reactions of photosynthesis come from?
splitting of water molecules
What are the light independent and dependent stages of photosynthesis?
Light dependent reactions produce ATP and NADPH from energy captured from light. Therefore without light it cannot proceed. Light independent reactions fix carbon dioxide into glucose using the ATP and NADPH produced in the light dependent reactions. So light independent reactions can occur without light as long as CO2, ATP and NADPH is present.
What are the two stages of photosynthesis?
The two stages of photosynthesis are the light dependent and the light independent. During the light reactions, light is converted into energy by a process of transferring electrons to and from a special chemical called NADP. In the light independent stage, called the Calvin Cycle, which uses that energy to change carbon dioxide into sugars for the cell's use.
