Human Body

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Across
  1. 6. All parts inside a cell working together like a system
  2. 8. Biomolecules like sugars and starches used for energy
  3. 9. Tubes that carry blood around the body
  4. 13. Chemical substances that speed up reactions in the body
  5. 14. Tissue forming the outer layer of skin and organs
  6. 15. Fat-based substances used for energy storage
  7. 16. Something that surrounds or closes something in
Down
  1. 1. Means “mainly” or “mostly”
  2. 2. Happening all the time without stopping
  3. 3. Tiny structures seen only with a microscope
  4. 4. Body covering made of protective tissue
  5. 5. To change something slightly to improve it
  6. 7. A word meaning “not including”
  7. 10. Perspiration produced by skin
  8. 11. Genetic material found in cells
  9. 12. Tiny particles that make up substances