science B4
- Created by: Alice
- Created on: 05-05-13 13:18
photosythesis:
it is how plants make energy. green plants use sun light to create energy in chemical form. it produces glucose which fules the plant. the equation for photosynthesis is......
Carbon Dioxide+Water-----light energy--> glucose+oxygen
oxygen is the waste product of this chemical reaction. the plant then creates protein, cellulose and starch from from the glucose.
the reaction of photosythesis:
it is a number of reactions. firt the chemical chlorophyll absorbes light energy. this then drives several reactions, which eventually builds the molecules of glucose.
Phytoplankton also use photosynthesis, and proved 60% of the earths oxygen.
Diffusion:
water is essential :
it keeps chemicals in solution
takes part it important reations
keeps cells in correct shape
and acts acts as a heat store
the human body is…
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