B3 - life on earth

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photosynthesis

Photosynthesis = carbon dioxide + water ===> oxygen + gluclose

OR = 6CO2 + 6H2===> 6O2 + C6H12O6

Water absorbed through root hair cells = Large surface area 

Light absorbed by the chlorophyll in the leaves 

Carbon dioxide taken in through stoma = open and close to allow gas exchange 

Photosynthesis is peformed in the chloroplasts  

Glucose

* Starch - storage                * Lipids - storage / making membranes

* Cellulose - growth             * Amino acids - make proteins 

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