Across
- 4. system that transports molecules to and from all cells in the body
- 5. molecules that are the building blocks of proteins
- 7. a molecule that organisms can use to release energy
- 8. the body's use of molecules for energy and growth
- 10. a category of large molecules that perform important tasks in the body
Down
- 1. system that takes in food and breaks it down
- 2. a molecule made of carbon and oxygen atoms
- 3. system that takes in oxygen and releases carbon dioxide
- 6. a group of atoms joined together in a particular way
- 9. the ability to make things move or change