1. Cell Cycle: Interphase & Mitosis

2. Vocabulary: Somatic Cells – body cells
Produced through mitosis
Has 46 chromosomes (23 pairs)
Sister chromatids – structures that contain identical copied of DNA
Diploid (2n) – total of 46 chromosomes in people – zygote & somatic cells

3. The Cell Cycle: The sequence of growth and division of a cell.
95% of cell cycle in interphase (growth & copying)
5% of cell cycle in mitosis (division)

4. Interphase: 3 Stages
Growth Stage 1 (G1) –growth and synthesize proteins (break down carbohydrates and lipids into energy)
Synthesis Stage (S) –Copies DNA
Growth Stage 2 (G2) – Growth and prepare for division (stocks up energy for division)

5. Interphase

6. Mitosis: When the cell divides
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

7. Chromosomes

8. Prophase Nuclear envelope disappears
Chromosomes condense (can see sister chromatids and centromere)
Spindle forms
Centrioles move to opposite poles of the cell
Centrioles form mitotic spindles which help pull the chromosomes apart.

9. Metaphase Chromosomes attach to the spindle fibers
Chromosomes move to the equator of spindle

10. Anaphase Centromeres split
Sister chromatids are pulled apart to opposite poles of the cell

11. Telophase 2 New Nuclei form
Chromosome s begin to uncoil to make chromatin

12. Cytokinesis Cytoplasm divides Two new daughter cells are now separate
Two new cells are formed and are identical