Biology

4. Beginning of a chemical reaction
5. protein; acts as a catalyst to accelerate a chemical reaction
7. A system that brings air into the body and removes carbon dioxide
10. a system breaks down food and absorbs nutrients
12. A type of nucleic acid, there is 2
15. A group of atoms bonded together
17. a system that enables body to move and maintain structur (They are different)
18. End of a chemical reaction
19. first steps to cell organization

1. Smallest particle of an element
2. Another type of nucleic acid, not the same as the last one
3. A system that processes information based on 5 senses
4. a system that develops offspring
6. One thing that a carbohydrate is made of
8. A science involving living things
9. What eukaryotes have, but a prokaryote doesn't have
11. a system that enables body to move and maintain structur (they are different)
13. Example of a eukaryotes; is plural
14. Two or more elements combined
16. What plant cells have (2 words put into 1)