CELLS

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Across
  1. 4. power required for sustained activity
  2. 5. a clear jell-like fluid inside a cell
  3. 7. an optical instrument used for viewing very small objects
  4. 10. dioxide, plants breathe this gas in and humans breathe this gas out
  5. 12. food producing organelle found in plant cells that convert light energy iinto sugars
  6. 13. small infective agent that replicates itself inside a cell
  7. 14. smallest living unit of a plant or animal
  8. 15. substances that can be eaten to sustain life
Down
  1. 1. a gas which animals, including humans, need to survive
  2. 2. an illness that affects a living thing preventing the body from working normally
  3. 3. an organelle found in large numbers in most cells
  4. 6. membrane, the outer wall of animal cell
  5. 8. this is a living thing
  6. 9. a living organism that lives on organic matter
  7. 11. the part of the cell which controls it