Tuesday, 21 October 2014

Photosynthesis

Photosynthesis

- It was developed 450 million years ago 


Chemiosmosis:  The movement of chemicals from high to low concentrations via semi permable membranes

Oxidized = Giving away electrons
Reduced= Gaining electrons

PSI needs P700 from the sun
PSII needs to receive P680 from the sun


the light reaction








Chlorophyll is a green pigment found in chloroplasts









Thylakoids store molecules that absorb  energy from the sun


Light-dependent reaction
traps solar energy and uses it to generate ATP and NADPH

light- independent reaction
Assimilates carbon dioxide to produce an organic molecule that can be used to produce biologically important molecules

Hydrogen= single proton


NADP exists to carry energy around

ADP spins very fast and the protons need to slow it down to form ATP

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