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Unit 7A - Cells
The nucleus controls what the cell does, how it grows and interacts with other cells
The cell membrane allows nutrients and oxygen  into the cell and carbon dioxide and waste out.
The cytoplasm contains smaller parts which carry out chemical reactions
(plant cells only)
The cell wall is semi-rigid and provides a framework for the cell in plants
The vacuole is a space filled with air or sap
(green cells only) chloroplasts perform photosynthesis, making food for the plant.