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  • Created by: Ogechi_
  • Created on: 21-05-16 17:54

Photosynthesis reaction and equation

Producers make their own food, They convert materials found in their environment into glucose, a carbohydrate, by using sunlight.

Carbon Dioxide + Water →light energy Glucose+Oxygen

The reactants are Co2  and water. The carbon dioxide diffuses into the plnt through the Stomata. The water diffuses into the plant throught the root hair cells. The reaction happens in the chloroplast inside the plant cells.

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Limiting factors for photosynthesis

Three factors can limit the speed of photosynthesis: light intensity, carbon dioxide concentration and temperature.

  • Light intensity. Without enough light, a plant cannot photosynthesise very quickly, even if there is plenty of water and carbon dioxide. ...
  • Carbon dioxide concentration. ...
  • Temperature.
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Adaptations of a leaf

Large surface area           To absorb more light


Short distance for carbon dioxide to diffuse into leaf cells


Absorbs sunlight to transfer energy into chemicals

Network of veins

To support the leaf and transport water and carbohydrates


Allow carbon dioxide to diffuse into the leaf

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Word equations for Earobic and Anarobic respiratio


Glucose + Oxygen → Carbon Dioxide + Water (energy)

  • Happens in the Mitochondria


Glucose → Energy + Lactic Acid

  • Happens in the cytoplasm
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Differences between Aerobic and Anarobic respirati

Unlike aerobic respiration, anaerobic respiration does not need oxygen. It is the release of a relatively small amount of energy in cells by the breakdown of food substances in the absence of oxygen.

AerobicAnaerobic Oxygen Needed Not needed Glucose breakdown Complete Incomplete End product(s) Carbon dioxide and water Animal cells: lactic acid. Plant cells and yeast: carbon dioxide and ethanol Energy released Relatively large amount Relatively small amount

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Interdependence - How organisms interact as part o

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