* Carbon dioxide (CO2) is fixed: The Calvin Cycle starts by incorporating carbon dioxide from the atmosphere into an organic molecule. This process is catalyzed by the enzyme Rubisco.
* Energy from ATP and NADPH is used: The energy stored in ATP and NADPH, produced during the light-dependent reactions, is used to convert the carbon dioxide into sugar.
* Glucose is formed: Through a series of complex reactions, the carbon dioxide molecules are gradually converted into glucose, a simple sugar that serves as the primary energy source for plants.
In addition to glucose, the light-independent reactions also produce other important molecules like:
* Glyceraldehyde 3-phosphate (G3P): This three-carbon sugar is a key intermediate in the Calvin Cycle and can be used to synthesize other organic molecules.
* Other sugars: Plants can use G3P to produce other sugars like fructose, sucrose, and starch.
* Amino acids: Plants can use G3P to synthesize amino acids, which are the building blocks of proteins.
* Fatty acids: G3P can also be used to produce fatty acids, which are essential components of lipids.
Overall, the light-independent reactions are essential for plants to convert inorganic carbon dioxide into organic molecules that they can use for growth, development, and energy production.
