Across
- 4. is where the air is brought into the lungs and removed from it
- 7. is our body is made out of
- 8. defends the body against infection and disease
- 13. need food
- 14. controls substances entering or leaving the cells
- 16. is a muscular bag and produces acid
- 18. are found in the nucleus of cells
- 19. contains water and food materials
- 20. are used to break large insoluble food particles
Down
- 1. are passed down from parents to their children
- 2. it carries nutrients that our cells need
- 3. is a red pigment
- 5. is completed in the small intestine
- 6. helps to keep our bones healthy and strong
- 9. controls all activities in the cells
- 10. contract and relax to help us move
- 11. is used to make objects look bigger
- 12. to support our body
- 15. is needed to break down digested food to release energy to do work
- 17. is an important tissue in our body