Difference:
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 "light independent".
RELATIONSHIP:
The light reactions and the Calvin cycle are both stages of photosynthesis. The light reactions (photosystems) produce NADPH, ATP, and Oxygen gas. The oxygen is released as a waste product but the NADPH and ATP enter the Calvin cycle, which produces a simple sugar molecule
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The products of the light reaction, ATP and NADPH, and used in the Calvin Cycle.
A phosphate from the ATP forms 1,3-bisphosphoglycerate molecules and the electrons from NADPH reduce the 1,3-bisphosphoglycerate molecules into G3P molecules which form glucose when they leave the cycle.
Hope that isn't too confusing!
light is essential in the light dependent reaction for the production of ATP and reduced NADP .these two compounds are utilized for the light independent stage of photosynthesis that occurs at stroma of chloroplast for the conversion of 6C compound glycerol phosphate into 3C compound triose phosphate .
Calvin Cycle
The main processes in the in dependant reactions are collectively called the Calvin Cycle.
Photosynthesis is performed in two stages:Light reactions (or light-dependent reactions): Energy from sunlight is required.Dark reactions (or light-independent reactions): No sunlight is required. However, energy formed by the light-dependent reactions is needed.
What is phosphoglyceraldehyde? Phosphoglyceraldehyde is a compound produced in the Calvin-Benson cycle (light-independent reactions) of photosynthesis (the process through which plants capture sunlight energy and use it with water and carbon dioxide to produce carbohydrates (such as glucose). Phosphoglyceraldehyde is abbreviated PGAL and is also called glyceraldehyde-3-phosphate (G3P).
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The molecule recycled between the Calvin cycle and the light-dependent reactions is adenosine triphosphate (ATP). ATP is produced in the light-dependent reactions and then utilized in the Calvin cycle to provide energy for the synthesis of sugars.
The light-dependent reactions of the Calvin cycle require light to occur and take place in the thylakoid membranes of the chloroplast. These reactions generate ATP and NADPH. In contrast, the dark reactions (Calvin-Benson cycle) occur in the stroma of the chloroplast and use ATP and NADPH from the light-dependent reactions to fix carbon dioxide and produce sugars.
The Calvin cycle occurs at any time of the day, while the light dependent reactions require light. The calvin cycle produces glucose, while the light dependent reactions produce oxygen, ATP, and NADPH. The calvin cycle occurs because of the products of the light dependent reactions.
The two major sets of reactions involved in photosynthesis are the light-dependent reactions and the light-independent reactions (Calvin cycle). In the light-dependent reactions, light energy is used to produce ATP and NADPH, while in the Calvin cycle, ATP and NADPH are used to convert carbon dioxide into glucose.
The dark reactions of photosynthesis are also known as the Calvin cycle or the light-independent reactions.
because the Calvin cycle does not require light
NADPH is produced by the Calvin cycle through the light-dependent reactions of photosynthesis. ATP is also generated during the light-dependent reactions but is not directly produced by the Calvin cycle.
The main processes in the in dependant reactions are collectively called the Calvin Cycle.
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Light dependent reactions of photosynthesis are also known as the light reactions. These reactions occur in the thylakoid membranes of chloroplasts and involve the absorption of light energy to produce ATP and NADPH, which are used in the Calvin cycle to generate glucose. Oxygen is also produced as a byproduct of these reactions.
The dark reactions of photosynthesis are also known as the Calvin cycle or the light-independent reactions. These reactions take place in the stroma of chloroplasts and involve the conversion of carbon dioxide into glucose using ATP and NADPH produced during the light-dependent reactions.
The light reactions provide the energy carriers used in the Calvin cycle