Specialised Cells
- Created by: sxdewinder`
- Created on: 10-05-15 16:11
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- Specialised Cells
- Palisade Leaf Cells
- Are adapted for photosythesis
- Packed with chloroplasts for photosythesis
- Tall shape means a lot off surface area exposed down the side for absorbing CO2 from the air in the leaf
- Thin shape means that you can pack loads of them in at the top of a leaf
- Guard Cells are adapted to open and close pores
- Special kidney shape which opens and closes the stomata (pores) in a leaf
- When the plant has lots of water the guard cells fill with it and go plump and turgid
- When the plant is short of water, the guard cells lose water and become flaccid, making the stomata close
- Thins outer walls and thickened inner walls make the opening and closing work
- Red Blood Cells are adapted to carry oxygen
- Concave shape gives a big surface area for absorbing oxygen, and helps to pass through capillaries
- There packed with haemoglobin - the pigment that absorbs the oxygen
- They have no nucleus, to leave even more room for haemoglobin
- Sperm and Egg cells are specialised for reproduction
- Main function off the egg cell is to carry the female DNA and to nourish the developing embryo in the early stages
- When a sperm fuses with an egg, the eggs membrane instantly changes its structure to stop any more sperm getting in
- The function of the sperm is to get the male DNA to the female DNA.
- It has a long tail and streamlined head to help it swim to the egg. it has a lot of mitochondria in the cell to provide energy
- Palisade Leaf Cells
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