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Introduction to Photosynthesis
Discuss with your group: Where does the mass of a tree come from?
Photosynthesis at MIT
Photosynthesis
producers convert solar energy into chemical energy (glucose)
Autotrophs/Producers
Photosynthesis Equation
CO2 + H2O ——> C6H12O6 + O2
converts carbon dioxide into glucose
stores energy in chemical bonds of glucose
light
Chloroplast
site of photosynthesis
contains required enzymes & folded membranes (surface area)
contains chlorophyll (pigment used for light absorption)
Light vs. Dark Reactions
Light Reactions
Sun’s energy breaks water molecule, produces O2
Begins chain of energy producing reactions
Creates ATP!
Light vs. Dark Reactions
Dark Reactions
CO2 enters
Energy (ATP) from light reactions used to “fix carbon”
Creates sugar (glucose) building blocks
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