PHOTOSYNTHESIS
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ENDOTHERMIC PROCESS!
Absorbs energy from surroundings
Photosynthesis or 'carbon fixing' - first step of life (an inorganic compound is transformed into an organic compound)
Photolysis - Splitting of water molecules
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Low frequency,
Long wavelength
High frequency,
Short wavelength
LIGHT DEPENDENT
Uses light energy to generate ATP and split water molecule to make H+ ions.
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LIGHT INDEPENDENT
Uses ATP and H+ ions to 'fix' CO2, making C6H12O6.
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*Plants appear green because they contain chloroplast, which contains the pigment chlorophyll. Chlorophyll absorbs all light except green light (which it reflects), making plants appear green.
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Oxygen is the waste product.
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Larger molecules have more bonds, take more energy to build, thus they can act as energy stores.
STARCH ​
- Contains 1-4 glycocidic linkage
- Also called amylose, broken down by enzyme AMYLASE
- Straight chain structure (alpha glucose); cellulose is branched chain structure (structural support in plants)
"CHLOROPHYLL IS THE MAIN PHOTOSYNTHESIS PIGMENT"
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RATE OF PHOTOSYNTHESIS
- Change in biomass
- CO2 uptake
- O2 production
FACTORS AFFECTING PHOTOSYNTHESIS ​
1) Light Intensity
2) Humidity
3) Temperature
4) CO2 concentration
5) pH
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