Biology

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Across
  1. 4. Beginning of a chemical reaction
  2. 5. protein; acts as a catalyst to accelerate a chemical reaction
  3. 7. A system that brings air into the body and removes carbon dioxide
  4. 10. a system breaks down food and absorbs nutrients
  5. 12. A type of nucleic acid, there is 2
  6. 15. A group of atoms bonded together
  7. 17. a system that enables body to move and maintain structur (They are different)
  8. 18. End of a chemical reaction
  9. 19. first steps to cell organization
Down
  1. 1. Smallest particle of an element
  2. 2. Another type of nucleic acid, not the same as the last one
  3. 3. A system that processes information based on 5 senses
  4. 4. a system that develops offspring
  5. 6. One thing that a carbohydrate is made of
  6. 8. A science involving living things
  7. 9. What eukaryotes have, but a prokaryote doesn't have
  8. 11. a system that enables body to move and maintain structur (they are different)
  9. 13. Example of a eukaryotes; is plural
  10. 14. Two or more elements combined
  11. 16. What plant cells have (2 words put into 1)