The picture above depicts a plant outside my house. In order to produce high-energy sugars, this plant uses the Calvin cycle. The Calvin cycle is a metabolic pathway in plants. The plants bind carbon dioxide molecules and water molecules to an enzyme called RUBP. The plant then spends several ATP and NADPH molecules to produce G3P, and the G3P molecules bond together to form glucose, fructose and other organic, high-energy, compounds. The Calvin cycle occurs in all C3 plants, and is one of a plants light independent reactions, which occur in the stroma of plant cells.