AP BIOLOGY

Detailed explanation-1: -Glyceraldehyde 3-phosphate or G3P is the product of the Calvin cycle. It is a 3-carbon sugar that is the starting point for the synthesis of other carbohydrates. Some of this G3P is used to regenerate the RuBP to continue the cycle, but some is available for molecular synthesis and is used to make fructose diphosphate.

Detailed explanation-2: -The G3P is ultimately converted to glucose. Every 3 cycles of the Calvin Cycle (light independent reaction), 6 molecules of G3P are produced; only 1 is used to produce glucose. The remaining 5 molecules of G3P are used to regenerate RuBP to allow the Calvin Cycle to continue.

Detailed explanation-3: -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-4: -Therefore, G3P, as a prime end product of photosynthesis, is the source of carbohydrates that plants require for both cell maintenance and cell growth (Fig. 3.6).

Detailed explanation-5: -It creates a triplet of items in the C3 cycle which are 3-Phosphoglycerate (3-PGA), glyceraldehyde 3-P (GAP), and dihydroxyacetone phosphate or DHAP. Plants cell produce organic molecules utilizing the products of light reactions like ATP and NADPH.