Across
- 3. the chemical reaction between oxygen and glucose that releases energy into the cells
- 7. Body’s way of making energy
Down
- 1. made of carbon and oxygen atoms
- 2. system- the body system that takes in oxygen and releases carbon dioxide
- 4. molecules that are building blocks of protein
- 5. reaction-a process in which atoms rearrange to form new substances
- 6. system- the body system that transports molecules to and from all cells of the body