1. The Cell Cycle Making new cells for growth and replacing old dying cells.

2. Interphase 95% of the cell cycle G1-Cell grows to mature size S-DNA replicates G2-Prepares for Cell division DNA is not in chromosomes yet

3. Interphase Draw a picture of this phase.

4. Mitosis: prophase DNA condenses to form chromosomes (see picture)see picture Nuclear membrane breaks down

5. Mitosis: prophase Draw a picture of this phase. Centromere, chromatid, chromosome

6. Mitosis: metaphase Chromosomes line up across the center of the cell Each chromosome attaches to a spindle fiber at its centromere, which holds the chromatids together. The centrioles are at the opposite sides holding the spindle fibers.

7. Mitosis: metaphase Draw a picture of this phase.

8. Mitosis: anaphase Centromeres split. The 2 chromatids separate. Each chromatid goes to the opposite end of the cell along the spindle fiber.

9. Mitosis: anaphase Draw a picture of this phase.

10. Mitosis: telophase A new nuclear membrane forms around each region of chromosomes. Cell stretches out.

11. Mitosis: telophase Draw a picture of this phase.

12. Cytokinesis Cell membrane pinches. Two cells are formed with identical copies of DNA. DNA unwinds.

13. Cytokinesis Draw a picture of this phase.

15. BAG CONTENTS Orange chromosome (4 beads, 2 centromeres, 2 chromatid) Blue chromosome (3 beads, 2 centromeres, 2 chromatid) Thread 2 smaller plastic bags 2 small white tubes (centrioles)