1. Why is the nucleus important to the cell?

2. Importance of Nucleus Controls all of the cell’s function
Contains genetic material- DNA and chromosomes
Importance of Nucleus

3. Chemical that contains the information for an organism’s growth and function
Deoxyribonucleic acid
DNA

4. Chromosomes DNA is packed together to make chromosomes
Humans have 46 chromosomes in each cell
Chromosomes

5. Growth
Development
Repair
Cell Division

6. Growth Cells need to divide so multicellular organisms can grow.
Adults have about 100 trillion cells
Growth

7. Cells develop to become specialized to perform particular functions (skin cells, nerve cells, muscle cells…)
Development

8. Repair Cells divide to repair the body (cuts-broken bones)
Cells repair and divide at different rates. Skin cells are constantly repairing, while brain cells live a long time and don’t divide very often.
Repair

9. Nucleus-Chromosomes-DNA

10. Steps of Cell Cycle Interphase Prophase Metaphase Anaphase Telophase
Cytokinesis
Steps of Cell Cycle

11. Interphase Cell begins to grow Organelles double DNA is copied
Cell prepare for mitosis-the division of the nucleus
Interphase

12. Prophase DNA condenses into chromosomes
Nuclear membrane begins to disappear
Prophase

13. Chromosomes line up across the center of the cell
Metaphase

14. Chromosomes are split and pulled to opposite sides of the nucleus
Anaphase

15. A new nuclear membrane forms around the separated chromosomes
Telophase

16. The division of the cytoplasm
Cytokinesis

17. Mitosis

18. Types of Asexual Reproduction
Binary Fission-division of prokaryotes
Budding-develop tiny buds that grow into a complete identical organism
Regeneration-the growth of new cells at a site of lost body parts
Types of Asexual Reproduction