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Megan Nolan

Biology revision Notes:

Cell Membrane- Holds the cell together and controls what enters/ leaves the cell

Nucleus- Controls all cell activity. Contains chromosomes and DNA

Cytoplasm- All cell activity takes place e.g. respiration

Chloroplasts- Contains chlorophyll which absorbs light energy for photosynthesis

Cellulose Cell Wall- Gives structural…

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Megan Nolan

Foreign cells could be rejected by immune systems


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