Science revision

Photosynthesis

Biology revision

Photosynthesis is in two stages.
Energy from the sun is used in photosynthesis to change carbon dioxide and water into glucose and oxygen.
To do this it takes chloroplasts in plant cells. Chloroplasts contain pigments that absorb the light energy, for example this is what chlorophyll does.
C = carbon dioxide H2O = water H = glucose O = oxygen
Even though this is a single chemical reaction, photosynthesis happens in two stages.
Water is split into oxygen by the light energy.
However water isn't the overall product due to more being used up in the first stage than how much is produced in the second.

Glucose is converted into other substances:

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