Question

For the following question, please answer in essay format( a page and half long minimum)( if hand written please print legibly and be clear about which part of the question are answering, in complete sentences, with as much detail as possible. Thanks!

Write the balanced stoichiometric equation for oxygenic photosynthesis, including all substrate molecules, all product molecules, and the fate of all atoms (in this equation) as they travel from substrate to product molecules. In which cellular compartments (and in which organisms) do the two sub-reactions of oxygenic photosynthesis occur?

Answer 1

ANSWER -

photossynthesis is a process of producing food by the plants by absorbing sunlight with the help of chlorophyll molecule present in the chloroplast ,and in chloroplast there are photosystem I and photosystemII present which helps in absorbance of sunlight. this is how sunlight is being absorb. now, the carbon dioxide is absorbed through the stomata. the water which is being absorbed by the roots are taken up and transported to the chloroplast where the water molecule is broken down into electrons and oxygen. the oxygen is expired out and this is the oxygen molecule which we breath. the rest of the protons and electrons which are released are used up in the further process. these all are taking place in the granum of the chloroplast and is called as the light reaction where there is a release of oxygen molecule which we breath. the main energy product of the light reaction is NADPH, this nadph along with atp undergoes into calvin cycle, here the co2 which is being absorbed by the plant is comes into action, the calvin cycle also occurs in the chloroplast of the cell, the end product of calvin cycle is triose phosphate which is exported out and then converted into glucose. this is called as dark reaction. on this basis there are two differnt types of plants exist, one is c4 plants and other one is cam plant, they both have a special pathway of hatch and slack pathway,comprising of bundle sheath cells and mesophyll cells.

equation of photosynthesis

6CO2 +12H2O --------------> C6H12O6 + 6H2O + 6O2.

here, co2 is being absorbed completely in the calvin cycle and the carbon of co2 is being used as a carbon in glucose, the H2O given in the beginning is being break down in the grana resulting into release of oxygen into the atmosphere, and the excess of water is being transpired out.

this is the basic of photosynthesis and how it is occuring and where it is occuring.