1. Discuss with your neighbor, how you started as one cell and are now made up of over 3 trillion cells.

2. Controls when cells are supposed to divide.
The Cell Cycle
Controls when cells are supposed to divide.

3. What is a cycle?

4. cy·cles
plural1. 
repeated sequence of events: a sequence of events that is repeated again and again, especially a causal sequence

5. Chromosomes Chromosomes are made up of DNA
They have 2 sister chromatids
Chromatids are attached by a centromere.
1 Sister
Chromatid
Centromere

6. The Cell Cycle The cell cycle consists of four phases: G1 phase
S phase
G2 phase
M phase
INTERPHASE:is made up of G1, S, and G2 phases
Cell Division: is also known as M phase. Cell division is made up of Mitosis and Cytokinesis.

7. G1 Phase G1 phase is where cells: Are increasing in size
Making new proteins

8. S Phase
S phase is where:
Chromosomes are replicated
DNA is being made

9. G2 Phase G2 phase is where: Organelles are being produced
Cell is preparing for mitosis

10. M Phase M phase is where: The cell begins the process of dividing.
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis

11. Cancer Cancer- is uncontrolled cell growth.
How are the cell cycle and cancer related?

12. Checkpoint Animation

13. Think-Pair-Share Why do your cells divide?
How do your cells know when to divide?
Are your cells the same size as they were when you were 2 years old?