Two phases of photosynthesis?

Question

Two phases of photosynthesis?

Answer 1

The 2 phases of photosynthesis are as under:

1) Light or photochemical phase---when water is split to produce reducing power 'H' and ATP---called 'Assimilatory power'. The reaction takes place on thylakoids in the chloroplast.

2) Dark or Kelvin reaction----When Carbon dioxiden is reduced by 'assimilatory power' into carbohydrates etc. The reaction takes place in the stroma of chloroplast.

Answer 2

The first phase is the light-dependent reactions in which light is absorbed, water is split into oxygen, hydrogen and electrons forming ATP and NADPH.

The second phase is the light-independent reactions in which the energy from ATP and NADPH is used to combine carbon dioxide with a five carbon precursor molecule.  A three carbon molecule is formed that can be used to synthesize glucose or other organic molecules.

Answer 3

Light Reactions (aka: Z Scheme)

Photolysis (H2O 2H+ + 1/2O2)

Photophosphorylation (ADP + P ATP)

NADP Reduction (NADP + H+ NADPH)

Dark Reactions (aka: C3 or Calvin-Benson Cycle)

Carbon Dioxide Fixation

(CO2 C6H12O6)

The web site below describes photosynthesis in easy to read detailed format:

http://www.com.univ-mrs.fr/IRD/atollpol/...