science

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Across
  1. 1. basic unit of life
  2. 6. Master gland located at the base of the brain
  3. 7. The bending of light as it passes through different media
  4. 8. An atom with the same number of protons but different neutrons
  5. 10. Rarest blood type
  6. 13. A substance that speeds up a chemical reaction without being consumed
  7. 14. Only bone in the body not connected to another
  8. 15. Valve between the left atrium and left ventricle
  9. 17. Fibrous tissue connecting bone to bone
  10. 18. study of fungi
Down
  1. 2. name of the boundary surrounding a black hole
  2. 3. The genetic material that carries the hereditary information
  3. 4. Anatomical term for the "voice box"
  4. 5. Longest nerve in the human body
  5. 6. fundamental unit of light
  6. 9. Largest muscle in the human body
  7. 10. cell known as protein factory
  8. 11. rarest occuring element
  9. 12. Scientific name for the human kneecap
  10. 16. A biological catalyst that is almost always a protein