Special cells
- Created by: Jessica
- Created on: 27-03-14 23:49
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- Special cells
- Red blood cells
- Doughnut shaped/disc - gives it a big area so it can collect more oxygen
- Has a cell membrane, cytoplasm
- NO NUCLEUS - only cell in body with no nucleus
- So it has more space so it can fill itself with more oxygen - it doesn't last long in the body
- Sperm cells
- Has a tail - move
- Has cell membrane, nucleus and cytoplasm
- 1/2 DNA
- 23 chromosomes
- 1/2 DNA
- Has to join with egg cell - FERTILISATION
- Nerve cells
- Carry electrical signals
- Has cell membrane, nucleus and cytoplasm
- Long/drawn out
- Nerve endings to receive/send signals
- Palisade cell - leaf cell
- Lots of chloroplasts - photosynthesis
- Guard cells
- Underside of leaf
- Creates a pore (hole)
- Carbon dioxide goes in - oxygen goes out
- Root hair cell
- Root of plants - long thin hair
- Absorb water from soil
- Big surface area
- No chloroplasts (underground)
- Red blood cells
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