8th Grade Reading Check

4. The caffeine in coffee and soda does not give you energy, it is a _____ against your brain.
5. All the other variables/circumstances in a lab that are kept constant/identical.
8. What provides energy from food molecules as they react with oxygen?
12. The variable that is measured/observed/counted after the IV is changed.
13. The product of chemical reactions where food molecules react with oxygen.
15. The measurement/unit of energy for this unit.
16. The activity that allows people to grow, heal wounds, fight disease, and think better.
17. The "new stuff" in a chemical reaction.

1. The "old stuff" in a chemical reaction.
2. The system that transports carbon dioxide and oxygen throughout the body.
3. The variable that is intentionally manipulated.
6. What cannot be created or destroyed, only converted from one type to another?
7. The activity from Reading 1.1 that uses the most calories.
9. The type of potential energy stored in the molecular bonds of our food.
10. How many IV's can you have in one lab?
11. Another name for fat.
13. The acronym for the three atoms found in important biomolecules.
14. Liquid fat.
17. Made from the latin words for "foot" and "measure."
18. In order to be alive, an organism must be made of _____.