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Specialised Cells

1) Erythrocytes (red blood cells)
- It contains haemoglobin to carry more oxygen
- No nucleus to increase surface area, so more
haemoglobin can be held
- It has a biconcave shape so it can easily pass
through blood vessels (increases surface area
volume ratio)
- No…

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- Vacuole that maintains water balance
- Contains a large number of mitochondria that carries out respiration for
the active uptake of minerals and energy
- Thin cell wall for short diffusion distance and takes up substances


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