CELLS

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Across
  1. 2. An irreversible increase in size
  2. 10. Ability to respond to changes in the environment
  3. 11. The basic unit of living things
  4. 12. A collection of similar cells grouped together
  5. 13. Photosynthesis takes place here
  6. 14. The "brain" of the cell
  7. 15. Organisms that are made up of only one cell
Down
  1. 1. Ability to create fertile offsprings
  2. 3. Release of energy from food
  3. 4. Different organ systems working together
  4. 5. The outer layer of a plant cell
  5. 6. Different tissues working together
  6. 7. Getting rid of metabolic waste products from the body
  7. 8. Organisms that are made up of many cells
  8. 9. Cell respiration takes place here