1. Cell Growth and Division

2. Formation of New Cells
With a partner, come up with an explanation about how new cells develop inside of your body?
If new cells do not develop inside your body explain why.

3. Formation of New Cells

4. Formation of New Cells

5. Formation of New Cells
New cells are necessary for repair and growth, development, and reproduction.

6. Formation of New Cells
DNA (deoxyribonucleic acid) tells your cells what to do, and when to do it.
Located in the nucleus of cells.

7. Formation of New Cells by Cell Division
Prokaryotic Cell reproduction
Eukaryotic Cell reproduction

8. Prokaryotic Cell Reproduction
Reproduce by a type of cell division called binary fission.
Binary fission is a form of asexual reproduction that produces identical offspring.

9. Prokaryotic Cell Division
Wait, NO SEX??
Amoeba asexually reproducing.

10. Asexual Reproduction

11. Eukaryotic Cell Reproduction
DNA must replicate and the end result is 2 genetically identical cells.

12. Chromosomes

14. Chromosomes Composed of a cells DNA and associated proteins.
Chromosome, chromatid, and centromere drawing.

15. How Chromosomes Affect Development
Each human somatic cell (all cells except sperm and egg) has 2 copies of 23 different chromosomes for a total of 46 chromosomes.
Each chromosome contains thousands o genes to keep you alive.
You received a set from your biological mother and father.

16. Sets of Chromosomes

17. Chromosome

18. Chromosomes
Homologous chromosomes- chromosomes that are similar in size, shape, and genetic content.
Diploid-when a cell contains two sets of chromosomes. (46, somatic cells)
Haploid- when a cell contains one set of chromosomes.
Number of chromosomes represented by the letter n.

19. Mitosis vs. Meiosis
Mitosis: Cell division for growth and development (our focus now)
Meiosis: Cell division for production of gametes?
Soo what’s a gamete?

20. Mitosis

21. Do all cells divide at the same rate? Why or why not?

22. The Cell Cycle
Focus: What must happen for the cell cycle to occur.

23. The Cell Cycle
The Cell Cycle
Control of the Cell Cycle