~Knowing Mr. Photosynthesis~

Learning Biology is FUN! Photosynthesis doesn’t need to be hard~

1) Definition: Process by which plants and some single-celled organism produce sugars from sunlight and carbon dioxide.

Then the sugars become food for cellular respiration.

2) The process occurs in chloroplast. 

3) It involves - light reactions and the Calvin cycle.

       Converting light energy to chemical energy.

LIGHT REACTION

Occurs in presence of light

Occurs in grana

(Photolysis of water)

DARK REACTION

Occurs in light & dark

Occurs in stroma

(Formation of glucose)

4) Light reactions convert sunlight to ATP and NADPH.

5) The Calvin cycle uses ATP and NADPH to convert CO2 to sugar.

At the end of the process:

6 water molecules + 6 CO2 = 1 sugar + 6 oxygen molecules