Yr 9 Revision

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Across
  1. 2. This blood cell fights disease so it contains lots of digestive enzymes to help get rid of pathogens
  2. 5. Cell which carries oxygen around the body and has a biconcave shape
  3. 6. The reproductive organ of plants
  4. 9. A group of cells of the same type working together
  5. 12. Where aerobic respiration takes place inside a cell
  6. 17. The cell wall is found in plant and algal cells and made of _____
  7. 19. Part of the cell that controls the activities of the cell
  8. 20. Different organs working together to perform one or more functions
  9. 21. Where most of the chemical reactions take place in a cell
  10. 26. Plant and animal cells (__________ cells) have a cell membrane, cytoplasm and a genetic material enclosed in a nucleus
  11. 29. This cell type has a large surface area due to hair like projections on its surface, absorbs water and mineral ions
  12. 30. This type of microscope has a higher magnification and resolving power than a light microscope
  13. 31. Cell which contains only half the DNA of a normal cell, not sperm
  14. 32. Cell type which can make itself shorter to produce movement & contains lots of mitochondria
Down
  1. 1. Plant cell which has sieve-like end walls that allow the flow of sugary water through the cells
  2. 3. Flowers have the primary aim of attracting insects for...
  3. 4. As an organism develops, cells ________ to form different types of cells
  4. 7. A group of tissues that work together to perform a function
  5. 8. Term for a biological catalyst
  6. 10. This cell is found near the top of the leaf of a plant, and contains lots of chloroplasts
  7. 11. Absorb light for photosynthesis
  8. 13. Process by which food is absorbed across the wall of the small intestine and into the bloodstream
  9. 14. Line the wall of the small intestine, create a large surface area for digestion
  10. 15. Circular pieces of DNA found in bacteria, can act as a vector to transfer DNA from one organism to another
  11. 16. Simple cell which does not contain a nucleus, bacterial cells
  12. 18. This cell contains half the DNA of a normal cell, has lots of mitochondria and digestive enzymes in its head
  13. 22. Found in plant cells and filled with cell sap
  14. 23. The cell _________ controls the passage of substances into and out of the cell
  15. 24. Protein synthesis occurs in
  16. 25. found mostly on the underside of the leaf; allow gas exchange
  17. 27. Plant cell which has no cytoplasm and no end walls, transports water
  18. 28. This cell transmits nervous impulses around the body and has long fibres so the messages can travel around the body quickly