Metabolism

4. The organ system responsible for taking in oxygen and expelling carbon dioxide as you breathe.
7. A rigid layer that surrounds the cell membrane of plant cells for support and protection.
8. A thin, flexible layer that surrounds a cell, controlling what goes in and out.
9. The system made of the heart and blood vessels that pumps blood and transports oxygen throughout the body.
10. A condition where the body cannot properly process glucose in the blood.
13. A condition where the blood doesn't have enough healthy red blood cells to carry oxygen.
15. A complex carbohydrate found in many plants, which provides energy.
16. The control center of a cell, containing its genetic material.
17. The sum of all the chemical reactions that happen within a living organism to maintain life.

1. The organ system that breaks down food into smaller nutrients that the body can absorb for energy.
2. The process plants use to make their own food using sunlight.
3. _____________ respiration, the process that leads to cells releasing energy
5. A type of simple sugar that is a key source of energy for cells.
6. A molecule essential for building, maintaining, and repairing body tissues.
11. acids The fundamental building blocks of proteins.
12. The organ that produces digestive enzymes and insulin
14. A condition where the airways narrow and swell, making it difficult to breathe.