A cell that is specialised for a particular function. All cells are specialised.
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What is the function of a leaf cell?
Absorbs light energy for photosynthesis.
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What does a leaf cell look like and why?
It's packed with chloroplasts. Regular shaped, closely packed cells form a continuous layer for efficient absorption of sunlight.
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What is the function of a root hair cell?
Absorbs water and mineral ions from the soil.
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What does a root hair cell look like and why?
Long 'finger-like' process with very thin wall, which gives a large surface area.
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What is the function of a sperm cell?
To fertilise the egg cell.
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What does a sperm cell look like and why?
The head contains genetic information and an enzyme to help penetrate the egg cell membrane. The middle section is packed with mitochondria for energy. The tail moves the sperm to the egg.
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What is the function of a red blood cell?
Contains haemoglobin to carry oxygen to the cells.
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What does a red blood cell look like and why?
Thin outer membrane to let oxygen diffuse through easily. Shape increases the surface area to allow more oxygen to be absorbed efficiently. No nucleus, so the whole cell is full of haemoglobin.
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