specialised cells
- Created by: Rosemary King
- Created on: 11-11-12 17:27
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- specialised cells
- root hair cells
- tiny hair like extension to increase surface area of the cell so it can absorb water and ions more efficiently.
- palisade cells
- alot of chlorophyll in chloroplasts on the surface of the leaf to absorb light for photosynthesis
- xylem cells
- hollow cells with no cytoplasm so they can transport water through the stem and root
- ovum
- large so it is able to contain extra food stores for the developing embryo
- red blood cells
- no nucleas so there is extra room for heamoglobin which bind with oxygen from the air
- biconcave shape so that they have a large surface area to absorb more oxygen
- sperm cell
- large nucleus which contains genetic information to be passed on.
- tail which allows it to swim to the egg
- nerve cells
- long length for transmitting signals over long distances
- insulating layer around axon for speeding up transmission of a nerve impulse
- root hair cells
- no nucleas so there is extra room for heamoglobin which bind with oxygen from the air
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