science
Across
- 2. blood vessel that carries blood away form the heart
- 4. where proteins are made
- 6. the movement from an area of high conerntration to an area of low concerntration
- 7. dna exist in the same cells as these
- 10. contain cell sap
- 11. where chemical reactions take place
- 12. protect you against disease
- 14. the process where energy is released form glucose
- 16. the process of a liquid to a solid
- 19. proteins on the surface of cells
Down
- 1. a disease causing micro-organisms
- 3. attach to antigens on the surface of pathogens
- 5. when aerobic respiration takes place
- 8. used to keep the cononary artery open
- 9. controls what enters and leaves the cell
- 11. where photosynthesis occurs
- 13. blood vessel that transports blood deep into the tissues to deliver oxygen and glucose
- 15. blood vessels that carry blood into the heart
- 17. a substance that is made up of only one atom
- 18. contains dna in cells