Cells topic revision

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Across
  1. 3. The factors we investigated that can affect the growth of micro-organisms include: temperature and ________.
  2. 4. Name the type of cell which is specialised to carry oxygen around the body.
  3. 11. Antibiotics can be used to treat what kind of infections.
  4. 12. Leaf cells have lots of this structure to trap light energy for photosynthesis.
  5. 14. When your body encounters a micro-organism these molecules are produced to stick to it.
  6. 17. This type of cell is essential for fighting off infections.
  7. 18. Disinfectants are ________ than antiseptics.
  8. 20. Name the type of cells which control the opening and closing of the stomata (pores).
Down
  1. 1. Yeast cells are ______ than bacteria cells.
  2. 2. Name the type of system made up of the lungs, trachea and diaphragm.
  3. 5. Multiplying the objective lens and the eyepiece lens magnification will give the _______ magnification.
  4. 6. Name the structure found in a plant cell which helps it keep its shape.
  5. 7. Name the piece of equipment used by scientist to look at cells and micro-organisms.
  6. 8. Name the lens which can be twisted for a different magnification level.
  7. 9. We can gain immunity from a disease through a _______ which includes a weakened or dead version of the microbe.
  8. 10. A physical barrier found in the nose and windpipe that is sticky to trap micro-organisms.
  9. 13. Name the stain used for the onion cell slides.
  10. 15. The common cold is caused by what kind of micro-organism?
  11. 16. The levels of organisation for the human body include: cell, _____, organ, organ system, organism. Fill in the blank.
  12. 19. Name the structure (organelle) in a cell which controls all cell activities.