Across
- 8. The number of molecules of a substance in a given volume
- 11. Blood cells that carry oxygen and carbon dioxide in the blood
- 12. The movement of water molecules across a membrane in response to concentration differences
- 13. Tiny blood vessels that play an important role in gas exchange
- 15. The process by which nutrients diffuse or are moved from the digestive system to the blood
- 16. Technologies that are used to make images of cells, tissues, and organs
- 20. Air sacs in the lungs where gas exchange occurs
- 21. The first phase of mitosis, when the nucleus and nuclear membrane disappear and chromosomes form
- 22. The third phase of mitosis, when the chromosomes separate and move to opposite ends of the cells
Down
- 1. The stage in the cell when a cell grows and carries out it usual functions, as well as making a copy of its DNA and organelles to prepare for cell division
- 2. The continuous series of events in the life of a cell in which it is born, grows, reproduces, and dies
- 3. The second phase of mitosis, when the chromosomes align in the centre of the cell
- 4. The ability to grow new cells to replace damaged or lost body components
- 5. The series of events through which stem cells develop into specialized cells
- 6. A group of organs that interact with each other to perform a common task; the circulatory system includes the heart, arteries, and veins
- 7. The movement of molecules or other particles from an area od high concentration to an area of low concentration until they are evenly distributed
- 9. Specialized cells working together to perform a function; the four major types of human tissue are muscle tissue, connective tissue, nervous system, and epithelial tissue
- 10. The stage in the cell cycle when cytoplasm and organelles divide into two identical, separate cells
- 14. Different tissues working together to perform a specific task; connective, nervous, and epithelial tissues make up the brain
- 16. The stage in the cell cycle when the contents of the nucleus separate into two identical copes
- 17. The process of taking in oxygen and releasing carbon dioxide
- 18. The fourth phase of mitosis, when the membrane surrounding the nucleus re-forms, creating two new nuclei
- 19. A structure within a cell that carries out specific functions to support the life of the cell; functions include bring in nutrient, removing wastes, generating and releasing energy for the cell to use, making substances that the cell needs, and reproducing