Specialist Cells
- Created by: Tia fearnley
- Created on: 20-11-16 13:17
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- Specialist Cells
- Palisade Leaf Cell
- Lots of chloroplasts for photosynthesis
- they are crammed at the top of the cell so they are closer to the light
- Tall shape for a bigger surface area
- they are exposed down the side for abosrbing more CO2
- Thin shape
- lots more can cram into the top of the leaf
- Lots of chloroplasts for photosynthesis
- Guard Cells
- Kidney Shape
- opens and closes the stomata
- when the plant has lots of water the cell swells up
- makes the stomata open so gases can be exchanged for photosynthesis
- when the plant is short of water, the guard cell loses water and becomes flaccid making the stomata close
- this stops too much water vapour escape
- thin outer walls and thicker inner walls
- makes the opening and closing work
- sensitive to light and close at night to save water without losing out on photosynthesis
- this controls the function to allow gas exchange and water loss
- Kidney Shape
- Red Blood Cells
- Concave shape
- bigger surface area for absorbing oxygen and helps it pass smoothly through capillaries
- Have lots of haemoglobin
- the pigment that absorbs oxygen
- No nucleus
- leaves even more room for haemoglobin
- Concave shape
- Sperm and Egg Cells
- Carries the genetic information to make a child
- when a sperm has penetrated the egg, the egg stops anymore from also penetrating
- the sperm have tails that are streamline to swim to the egg and mitochondria to sprovide energy
- Palisade Leaf Cell
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