Across
- 3. The movement of molecules frim an area of high concentration to an area of low concentration until they are evenly distributed.
- 4. Air sacs in the lungs where gas exchange occurs/
- 5. system Provides a frame work for the muscles to attach. It protects soft organs and it stores minerals such as calcium.
- 8. The stage in the cell cycle when the cytoplasm and organelles divided into two identical, seperate cells.
- 10. Different tissues working together to perform a certain task.
- 11. The second phase of mitosis when the chromosomes align in the center of the cell.
- 12. The number of molecules of a substance given volume.
- 13. The fourth phase of mitosis when the membrane surrounding the nucleus re-forms, creating two new nuclei.
Down
- 1. The smallest blood vessel.
- 2. system Gathers and interprets sensory information from outside and inside the body. It cordinates all the functions of the organ system.
- 6. Specialized cells working together to perform a function.
- 7. Produce urine by filtering wastes and excess water from the blood.
- 9. stage in the cell cycle when the cell grows and carries out its usual functions, as well as making a copy of it's DNA and organelles to prepare for cell division.
- 12. wall A tough, rigid structure lying just outside of plants cell's membrane. Provides support for the celL.(Not found in animal cells).