Across
- 1. ______ digestion is the breakdown of large food particles to smaller food particles by enzymes and chemical processes.
- 5. _____ system breaks down food into smaller parts for absorption into the body.
- 7. Tiny blood vessel that connects arteries to veins
- 10. Organelle that stores water and other substances required by the cell.
- 11. Organelles that convert energy the cell receives into a form that it can use.
- 13. Thin structure that encloses all the contents of plant and animal cells
- 16. An abnormal condition affecting the body of an organism.
- 20. Wave-like muscle contractions along the digestive system.
- 21. Contents of the cell inside the cell membrane excluding the nucleus
- 23. Group of tissues that work together to perform a specific function.
- 25. Tiny air-filled sacs at the end of the bronchial tubes in your lungs, where gas exchange takes place (oxygen is absorbed and carbon dioxide is excreted).
- 27. ______ system transports blood reaching every cell in the body
Down
- 2. A layer of material that serves as a barrier to certain particles.
- 3. Diffusion of water through a selectively permeable membrane.
- 4. The basic unit of life.
- 6. _____digestion is the physical breakdown of food into small particles.
- 7. Organelle that converts sunlight into food
- 8. A structure or behaviour that increases the organisms chance of survival or reproduction.
- 9. Group of similar cells working together to perform a specific function.
- 12. Blood vessel that carries blood from the heart to the rest of the body.
- 14. ______system provides a mobile support frame for the body; protects soft tissue organs.
- 15. Outer covering of a cell that provides strength and support; found only in plant cells.
- 17. ______system removes chemicals and gaseous wastes from the body.
- 18. ______ system supplies blood with oxygen from the outside air and removes carbon dioxide from you blood.
- 19. The movement of particles from an area of higher concentration to an area of lower concentration.
- 22. Organelle that directs all the activities in a cell. Contains all of the cell's DNA.
- 24. ______ system coordinates and controls all organs and organ systems; detects, processes, and responds to stimulii.
- 26. Blood vessels that carry blood from the body back to the heart.