Question

Write the names of the two major tribal groups of photosynthesis that are essential for performing the Kelvin cycle.​

Answer 1

Explanation:

Calvin cycle was discovered by Melvin Calvin while radioactive studies of alga. It occurs in all photosynthetic plants whether they have C3 or C4 pathway.

Calvin cycle can be described under three stages:

Carboxylation: It is the fixation of CO2 into a stable organic intermediate. In this, CO2 is utilised for the carboxylation of RuBP. This reaction is catalysed by the enzyme RuBisCO and it results in the formation of two molecules of 3-PGA (3-Phosphoglyceric acid).

Reduction: These reactions lead to the formation of glucose. The steps involve utilisation of two molecules of ATP for phosphorylation and two of NADPH for reduction, per molecule of CO2 fixed. The fixation of six molecules of CO2 and six turns of the cycle are required for the removal of one molecule of glucose from the pathway.