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Both are involved in the light reaction of photosynthesis.

The ATP and hydrogen atoms are fed to the dark reaction which uses them to produce glucose sugar from carbon dioxide.

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In the following animation, the light reaction is shown in operation.

Ultimately the light energy ends up in the glucose, but it does not get their easily.

The dark reaction depends on the light reaction for energy, just as this computer depends on electricity.

 1. Light-dependent reactions (light reactions) 2. Light-independent reactions (dark reactions).

The dark reaction is a cyclic reaction in that it ends up producing part of what it actually used -- as in recycling an aluminum can after drinking the soda.

The dark reaction occurs in the stroma of the chloroplast which is the fluid outside of the thylakoids.

NADP and ATP were needed by the dark reaction to produce sugar.

Also, many dark reactions occur simultaneously to produce many glucose at the same time.

The products of the dark reaction are glucose and more RuBP, mostly RuBP.

Six "turns" of the calvin cycle (dark reaction) are needed to produce a single molecule of glucose.

Dark reactions make use of these organic energy molecules (ATP and NADPH). This reaction cycle is also called Calvin Benison Cycle, and it occurs in the stroma. ATP provides the energy while NADPH provides the electrons required to fix the CO2 (carbon dioxide) into carbohydrates.

What are dark and light reactions in photosynthesis?

Light reactions need light to produce organic energy molecules (ATP and NADPH). They are initiated by colored pigments, mainly green colored chlorophylls.

The dark reaction starts out with carbon dioxide reacting with a 5 carbon sugar molecule called RuBP or ribulose biphosophate. This binding of carbon dioxide to another molecule is called Carbon Fixation.

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  • Light-independent reactions - Wikipedia

    Thus, the light reactions act as a power plant to feed the dark reactions the necessary fuel to produce sugar.

  • Dark Reactions of Photosynthesis: The Calvin-Benson …

    In the following part of the program, the thylakoid membrane is enlarged so that the light reaction can be seen.

  • In the light-independent (or "dark") reactions, ..

    The dark reaction uses ATP and H atoms from the light reaction plus carbon dioxide gas from the air.

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Photosynthesis: What are the dark reactions? - Quora

The ATP energy produced in the light reaction is actually captured light energy which will end up STORED in a glucose molecule.

The dark reactions are often called "The Calvin Cycle" after the botanist Melvin Calvin who discovered the chemical reactions that occur in the dark reaction.

Light & Dark Reactions in Photosynthesis | Wyzant …

The electron pumping of the light reaction makes this possible, by pumping H ions into the thylakoid interior which are used to make ATP, and by NADP picking up the electrons and H ions to carry them to the dark reaction.

Light and Dark Reactions in Photosynthesis Written by tutor Kathie Z

The hydrogen ions are then used to produce ATP by a process called Chemiosmosis.

At the end of the electron transport chain, the electrons are picked up, along with hydrogen ions, by a special molecule called NADP which carries them to the dark reaction.

Remember, the purpose of the light reaction was to produce ATP and H atoms for the dark reaction.

The Calvin Cycle or Dark Reactions Photosynthesis - YouTube

The leftover oxygen atoms from splitting water form waste oxygen gas, the Hydrogen ions are used to make ATP, and the electrons are passed down the "electron transport chain".

There are actually two electron pumping stations, called photosystems, in the light reaction, which is more efficient than one.

Dark Reactions of Photosynthesis - Examples

The glucose produced by the dark reaction would then be used by the plant cell who made it for food.

In the next and final animation, the dark and light reaction are shown occurring simultaneously.

DARK Reaction | Photosynthesis | Adenosine …

The enlargement is shown below.

The light reactions of photosynthesis are actually an electron pumping system located on the thylakoids of the chloroplast.

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