Warm Up- Chapter 2

1. a medical condition that causes fewer red blood cells to transport oxygen molecules
4. a protein molecule in the pancreas that helps break down molecules.
5. the body system that takes in oxygen molecules
8. a protein molecule that acts like a key to unlock the cell membrane
11. the body system that breaks down food
14. breaks down from protein
16. a molecule that you find in foods such as fruits, vegetables, and grains.
18. a medical condition that causes tubes inside your lungs to swell up or close

2. tiny opening in the lungs that allows oxygen molecule to enter the circulatory system.
3. trillions in the whole body
6. a small organ located near the stomach and liver
7. ocean currents moving in big circles
9. tiny opening in the small intestines that allows smaller molecules to enter the circulatory system.
10. the body's use of molecules for energy and growth.
12. the body system that transports molecules to and from all cells of the body.
13. a medical condition that bocks out glucose molecules from body's cells.
15. breaks down from starch
17. dioxide, a molecule that you breathe out