Metabolism Crossword

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Across
  1. 4. system that transports molecules to and from all cells in the body
  2. 5. molecules that are the building blocks of proteins
  3. 7. a molecule that organisms can use to release energy
  4. 8. the body's use of molecules for energy and growth
  5. 10. a category of large molecules that perform important tasks in the body
Down
  1. 1. system that takes in food and breaks it down
  2. 2. a molecule made of carbon and oxygen atoms
  3. 3. system that takes in oxygen and releases carbon dioxide
  4. 6. a group of atoms joined together in a particular way
  5. 9. the ability to make things move or change