NEET BIOLOGY

Detailed explanation-1: -The reactions of the Calvin cycle add carbon (from carbon dioxide in the atmosphere) to a simple five-carbon molecule called RuBP . These reactions use chemical energy from NADPH and ATP that were produced in the light reactions. The final product of the Calvin cycle is glucose.

Detailed explanation-2: -In the second stage, ATP and NADPH are used to convert the 3-PGA molecules into molecules of a three-carbon sugar, glyceraldehyde-3-phosphate (G3P). This stage gets its name because NADPH donates electrons to, or reduces, a three-carbon intermediate to make G3P.

Detailed explanation-3: -ATP and NADPH are produced in the light reaction of photosynthesis. These are used in the biosynthetic pathway. There are also used in the Calvin cycle to reduce carbon dioxide. During that process, the carbon dioxide is reduced to sugar.

Detailed explanation-4: -The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air into sugar, the food autotrophs need to grow. Every living thing on Earth depends on the Calvin cycle. Plants depend on the Calvin cycle for energy and food.

Detailed explanation-5: -The Calvin cycle is the term used for the reactions of photosynthesis that use the energy stored by the light-dependent reactions to form glucose and other carbohydrate molecules (Figure 1). Figure 1 The light-dependent reactions harness energy from the sun to produce ATP and NADPH.