Crossword

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Across
  1. 2. - what is a measure of how acidic or basic a substance is?
  2. 3. acid - what molecules combine to form proteins?
  3. 7. - what is a chemical substance that is a present at the start of a chemical reaction?
  4. 8. - what is a substance that accelerates a chemical reaction?
  5. 9. - what elements are required for normal melabolism?
  6. 10. - what can be vitamins that bind with the enzyme and then begin a chemical reaction?
Down
  1. 1. - what is a substance which an enzyme acts?
  2. 2. - what is the result of an enzymatic reaction?
  3. 3. energy - what type of energy is required to initiate a reaction?
  4. 4. - what molecules are required for metabolic reactions?
  5. 5. site - what is a region or an enzyme where a substrate binds to the enzyme?
  6. 6. - what is produced by living organisms that catalyses chemical reactions?