Question

Detail the energy transfer steps by which solar energy is captured by the photosystem complexes in the chloroplast and converted into chemical energy (i.e. the light reactions). Describe both cyclic and noncyclic electron flow, be sure to include ATP synthesis.

Answer 1

in none cyclic process the electron does not come back to it's a place of origin whereas in the cyclic process elected electron comes back to it's a place of origin.

Light Reaction - Light reaction occurs within the strona 1 of the thyllakoid in the chloroplast. The main of objective the light reaction is the prodhues - tion of NADPH and ATP. 1 The formation of ATP en chloroplast under the influence of light is called photosynthetic phosphoryration or photophosphorylat It involves in a steps or atypes such as non cyclic and cyclic phosphorylation Cyclic process found in a few prokaryotic organism and in this process only ATP is formed with out the production of NADPH. . In cyclic phosphorylation only photosystem Ist is involved and there is no question of the Split up of water evolving origin . In non cyclic phosphorylation both the photosystem I and I are involved in this process NADPH is formed in odali adition to ATP..

However, the light-absorbing pigment is arranged in a functional state called the photosystem. All pigments which are present in the photosystem can absorb light but few can change the light energy to chemical energy.

Photosystemt Pont? Cuoroplayli Pheophytin a (enla without mg) PH Plastoquinone Fe (SA) & PGA. plas toquinone SB POB.: Pholocystem I P680} qurone I or Suhrs pelein Fesx EDT F esn->Fese e FNR. (plastoquera om TheYNADR 25 -t-kto wilt & NADPH H2o Splithre high b6+ (ордеи ZIP complex P620 (Pasto, Toom Light Toog (@ghoton) 2141142 ) Proton franskcalion in the laboratorio ATP membrana - scheme of during photosynthesis showing pathway of electron flow photophosphorylation (Introgration of photosystem I & II)