S3 1st term exam revision

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Across
  1. 4. Removing metabolic wastes from an organism
  2. 5. Chemical reactions in a living cell
  3. 7. The energy barrier of a chemical reaction is called _________ energy
  4. 8. Cell membrane is _________ permeable
  5. 9. An organism's ability of responding to a stimulus
  6. 10. A cell which contains true nucleus and membrane bound organelles
Down
  1. 1. Reactants in an enzymatic reaction
  2. 2. Breaking down food and releasing energy in a living cell
  3. 3. Site of releasing energy in a cell
  4. 6. An enzyme which speeds up the breakdown of hydrogen peroxide into water and oxygen