Metabolism

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Across
  1. 3. The body's use of molecules for energy and growth.
  2. 7. Molecules that are the building blocks of proteins.
  3. 8. A molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms.
  4. 9. A set of interacting parts forming a complex whole.
Down
  1. 1. A group of atoms joined together in a particular way.
  2. 2. The system that brings in oxygen molecules from the air and releases carbon dioxide.
  3. 4. A molecule that organisms get from the air or water around them and use to release energy.
  4. 5. The system that transports glucose, oxygen, and amino acids molecules to every cell in the body
  5. 6. The system that brings in food and breaks it down into smaller molecules, such as glucose and amino acids, that can fit into cells