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4 Written questions

4 Multiple choice questions

  1. Energy needed to start a reaction
  2. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  3. the elements or compounds that enter into a chemical reaction
  4. the substance acted upon by an enzyme or ferment

3 True/False questions

  1. Energy:Nutrients provide __________ and materials for cell development, growth, and repair.


  2. Enzymes:proteins that speed up chemical reactions in the body


  3. Chemical reaction:(chemistry) a process in which one or more substances are changed into others


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