1. Cell Cycle Chp 5.1 Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
Cell Cycle Chp 5.1

2. Do Now!
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
What do multicellular organisms use this type of cell division for?
Growth and development
Producing gametes
Halving the number of chromosomes
Getting rid of cancer

3. Mitosis Foldable Activity
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
Agenda
The Cell Cycle
Mitosis Foldable Activity
Mitosis
Go over homework

4. But HOW do cells come from other cells?
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
What are the three parts of the cell theory?
1) The cell is the most basic unit of life
2) All living things are made of cells
3) All cells come from other cells
But HOW do cells come from other cells?

5. Why might cells need to make more cells?
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
The Cell Cycle
Just like all other forms of life, individual cells (even yours!) go through different stages of growth.
Since this process happens over and over again in the daughter cells (the cells that get made), it is called a Cell Cycle.
What are the different stages?
Why might cells need to make more cells?

6. Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
Draw this chart in your notebook. We will fill it out during the next slide!

7. Gap 1 (G1) Synthesis (S) Gap 2 (G2) and then… MITOSIS! INTERPHASE:
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
INTERPHASE:
Gap 1 (G1)
Synthesis (S)
Gap 2 (G2)
and then…
MITOSIS!

8. In Gap 1, the cell is growing and carries out its normal functions.
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
Interphase
In Gap 1, the cell is growing and carries out its normal functions.
The cell also checks to make sure the cell can continue to S phase.
During Synthesis, the cell creates a copy of its DNA (doubles its chromosomes).

9. The cell also checks to make sure the duplicated DNA is undamaged.
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
The Cell Cycle
In Gap 2, the cell continues growing and carrying out its normal functions.
The cell also checks to make sure the duplicated DNA is undamaged.
During Mitosis, the cell begins dividing!

10. Eukaryotic Cell Cycle (YouTube link)
Chapter 5: Cell Growth and Division
Section 1: The Cell Cycle
Eukaryotic Cell Cycle (YouTube link)

11. MITOSIS! Next Up: Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
Next Up:
MITOSIS!

12. Cut lasagna creases to the middle fold
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
Hot dog fold
Hamburger fold
Lasagna fold
(hungry yet?)
Cut lasagna creases to the middle fold
Fold over and label your book!
Mitosis

13. Mitosis Animation (YouTube link)
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
Mitosis Animation (YouTube link)

14. Mitosis During Prophase: Chromosomes condense
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
During Prophase:
Chromosomes condense
Nuclear membrane breaks down
Centrioles move to ends of the cell.
Mitosis
Prophase M A T

15. Where do the spindle fibers come from?
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
During Metaphase:
Spindle fibers attach to chromosomes
Chromosomes align at cell equator
Mitosis P
Metaphase A T
Where do the spindle fibers come from?

16. Mitosis During Anaphase:
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
During Anaphase:
Chromatids separate and move to opposite sides of the cell.
Mitosis P M
Anaphase T

17. Mitosis During Telophase: Nuclear membrane reforms Chromosomes unpack
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
During Telophase:
Nuclear membrane reforms
Chromosomes unpack
Spindle fibers fall apart
Mitosis P M A
Telophase

18. Mitosis During Cytokinesis
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
During Cytokinesis
Cell splits apart into genetically identical daughter cells
Mitosis
P D
M O
A N
T E!

19. Mitosis in Real-Time (YouTube link)
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
Mitosis in Real-Time (YouTube link)

20. How the Cell Cycle Works (YouTube link)
Chapter 5: Cell Growth and Division
Section 2: Mitosis and Cytokinesis
How the Cell Cycle Works (YouTube link)