enzymes

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Across
  1. 3. Scale of acidity or alkalinity.
  2. 4. A substance on which enzymes act.
  3. 6. A substance that changes the rate of a chemical reaction without being changed by the reaction itself.
  4. 9. To construct a larger biological molecule from smaller ones.
  5. 10. The part of the enzyme to which a specific substrate can attach or fit on to.
  6. 11. Fat or oils, composed of fatty acids and glycerol.
Down
  1. 1. Food belonging to the food group consisting of sugars, starch and cellulose.
  2. 2. A simple sugar used by cells for respiration.
  3. 5. Naturally occurring compounds of carbon, hydrogen and oxygen.
  4. 7. The building blocks that make up a protein molecule.
  5. 8. A protein which catalyses or speeds up a chemical reaction.