Across
- 4. Body system that helps you to move around
- 5. Protects/holds a cell together
- 6. a type of sugar
- 14. Body system that transports food and oxygen to all parts of the body
- 15. Made up of many cells
- 17. What cells need in order to function
- 18. Convert food into energy for the cell
- 19. A unicellular fungus
- 20. control center of the cell
- 21. Smallest structural/functional unit of life
Down
- 1. Made of one cell
- 2. Tool to help see things that are really small
- 3. Made of many cells
- 7. Body system that breaks down food
- 8. A waste product given off by cells
- 9. Something that causes a response
- 10. State of existence similar to sleeping
- 11. Tiny food molecules
- 12. Body system that carries messages to all parts of the body
- 13. A substance that can cause elevated heart rate
- 16. A specialized structure in a cell