biology

4. respiration- without using air or the atmosphere
6. respiration- A chemical process in which oxygen is used to make energy from carbohydrates (sugars).
8. air passages inside the lungs
9. chemical substances that act like messenger molecules in the body
10. cell- secrete mucin and create a protective mucus layer.
11. A protein inside red blood cells
12. large airways that lead to the lungs
14. These compounds are used by the body to function and grow.
15. traps pathogen and dirt as it is sticky

1. A type of sugar; the chief source of energy for living organisms.
2. cables that carry electrical impulses between your brain and the rest of your body
3. The movement of atoms or molecules from an area of higher concentration to an area of lower concentration
5. cell- These cells have tiny holes which help filter the air
7. a shortening or reduction in size, in connection with muscles
13. chemical reaction that occurs in all living cells to release energy.