Question

explain calvins cycle,c3 and c4 pathway

Answer 1

Carbon is a basic constituent of all living organisms.It is found in carbohydrates,fats,proteins and nucleic acids.There are three main reservoirs of carbon:a)atmosphere,b)oceans (water),and c)carbonate rocks(limestones),coal and petroleum.The concentration of carbon as carbon dioxide in the atmosphere is 0.4 percent.T he carbon in the oceans is present in lesser quantities.The carbon cycle is also termed as calvin cycle.

Answer 2

Kelvin cycle is known as C3 cycle..as in the CO2 fixation stage..the CO2 diffuses into the stroma of the chloroplast in mesophyll cells and added to the five carbon acceptor ribulose-1,5-bisphosphate yielding a six-carbon intermediate product which is hydrated to produce two molecules of three-carbon 3-phosphoglycerate or phosphoglyceric acid (3-PGA)as the first stable product...

Kelvin cycle is known as C3 cycle..as in the CO2 fixation stage..the CO2 diffuses into the stroma of the chloroplast in mesophyll cells and added to the five carbon acceptor ribulose-1,5-bisphosphate yielding a six-carbon intermediate product which is hydrated to produce two molecules of three-carbon 3-phosphoglycerate or phosphoglyceric acid (3-PGA)as the first stable product...

Kelvin cycle is known as C3 cycle..as in the CO2 fixation stage..the CO2 diffuses into the stroma of the chloroplast in mesophyll cells and added to the five carbon acceptor ribulose-1,5-bisphosphate yielding a six-carbon intermediate product which is hydrated to produce two molecules of three-carbon 3-phosphoglycerate or phosphoglyceric acid (3-PGA)as the first stable product... rubisco(catalyst)

Kelvin cycle is known as C3 cycle..as in the CO2 fixation stage..the CO2 diffuses into the stroma of the chloroplast in mesophyll cells and added to the five carbon acceptor ribulose-1,5-bisphosphate yielding a six-carbon intermediate product which is hydrated to produce two molecules of three-carbon 3-phosphoglycerate or phosphoglyceric acid (3-PGA)as the first stable product... rubisco(catalyst) CO2+RuBP-------------------------->2,3-PGA

Kelvin cycle is known as C3 cycle..as in the CO2 fixation stage..the CO2 diffuses into the stroma of the chloroplast in mesophyll cells and added to the five carbon acceptor ribulose-1,5-bisphosphate yielding a six-carbon intermediate product which is hydrated to produce two molecules of three-carbon 3-phosphoglycerate or phosphoglyceric acid (3-PGA)as the first stable product... rubisco(catalyst) CO2+RuBP-------------------------->2,3-PGAthis first stable product (3-PGA),is a three-carbon compound that's why this mechanism of photosynthesis is called C3 cycle