Specialised cells Cells may be specialised to carry out a particular function
Palisade cells <ul><li>Large surface area. </li></ul><ul><li>Many tightly packed chloroplasts. </li></ul>AQA Science © Nel...
Root hair cells <ul><li>Thin membrane. </li></ul><ul><li>Large surface area. </li></ul>AQA Science © Nelson Thornes Ltd 20...
Guard cells <ul><li>Half-circle shape. </li></ul><ul><li>Found in pairs. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
Xylem cells <ul><li>Hollow. </li></ul><ul><li>Form long tubes. </li></ul><ul><li>Walls contain lignin. </li></ul>AQA Scien...
Epidermal cells <ul><li>Closely fitting. </li></ul><ul><li>Thin waxy layer. </li></ul>AQA Science © Nelson Thornes Ltd 200...
B2 1 Cells Animal cells – structure and function
Fat cells <ul><li>Have little normal cytoplasm. </li></ul><ul><li>Have few mitochondria. </li></ul><ul><li>Can expand up t...
Neurones <ul><li>Long and thin. </li></ul><ul><li>Form connections with other neurones. </li></ul><ul><li>Can carry electr...
Red blood cells <ul><li>Large surface area. </li></ul><ul><li>Small diameter. </li></ul><ul><li>No nucleus. </li></ul><ul>...
Muscle cells <ul><li>Elongated. </li></ul><ul><li>Contain many mitochondria. </li></ul><ul><li>Can contract. </li></ul>AQA...
Sperm cells <ul><li>Large nucleus. </li></ul><ul><li>Contain digestive enzymes. </li></ul><ul><li>Many mitochondria. </li>...
Gland cells <ul><li>Large cells. </li></ul><ul><li>Lie next to blood capillaries. </li></ul><ul><li>Able to manufacture an...
Egg cells <ul><li>Large in diameter. </li></ul><ul><li>Contain stored food. </li></ul><ul><li>Large nucleus. </li></ul>AQA...
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Jc Aqa Adds 006 B21 2 Prs Plantcells

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Jc Aqa Adds 006 B21 2 Prs Plantcells

  1. 1. Specialised cells Cells may be specialised to carry out a particular function
  2. 2. Palisade cells <ul><li>Large surface area. </li></ul><ul><li>Many tightly packed chloroplasts. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  3. 3. Root hair cells <ul><li>Thin membrane. </li></ul><ul><li>Large surface area. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  4. 4. Guard cells <ul><li>Half-circle shape. </li></ul><ul><li>Found in pairs. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  5. 5. Xylem cells <ul><li>Hollow. </li></ul><ul><li>Form long tubes. </li></ul><ul><li>Walls contain lignin. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  6. 6. Epidermal cells <ul><li>Closely fitting. </li></ul><ul><li>Thin waxy layer. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  7. 7. B2 1 Cells Animal cells – structure and function
  8. 8. Fat cells <ul><li>Have little normal cytoplasm. </li></ul><ul><li>Have few mitochondria. </li></ul><ul><li>Can expand up to 1000x. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  9. 9. Neurones <ul><li>Long and thin. </li></ul><ul><li>Form connections with other neurones. </li></ul><ul><li>Can carry electrical impulses in one direction. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  10. 10. Red blood cells <ul><li>Large surface area. </li></ul><ul><li>Small diameter. </li></ul><ul><li>No nucleus. </li></ul><ul><li>Contain haemoglobin. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  11. 11. Muscle cells <ul><li>Elongated. </li></ul><ul><li>Contain many mitochondria. </li></ul><ul><li>Can contract. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  12. 12. Sperm cells <ul><li>Large nucleus. </li></ul><ul><li>Contain digestive enzymes. </li></ul><ul><li>Many mitochondria. </li></ul><ul><li>Have long tail. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  13. 13. Gland cells <ul><li>Large cells. </li></ul><ul><li>Lie next to blood capillaries. </li></ul><ul><li>Able to manufacture and secrete chemicals. </li></ul>AQA Science © Nelson Thornes Ltd 2006 
  14. 14. Egg cells <ul><li>Large in diameter. </li></ul><ul><li>Contain stored food. </li></ul><ul><li>Large nucleus. </li></ul>AQA Science © Nelson Thornes Ltd 2006 

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