1. Starter Name the three components of the Cell Theory.
What is the function of the nucleus?
What is the function of the cytoplasm?

2. Starter Name the three components of the Cell Theory.
All organisms are composed of cells.
Cells are the basic unit of structure and organization of life.
All cells arise from preexisting cells
What is the function of the nucleus?
What is the function of the cytoplasm?

3. Starter
Name the three components of the Cell Theory.
What is the function of the nucleus? contains the cell's hereditary information and controls the cell's growth and reproduction
What is the function of the cytoplasm?

4. Starter
Name the three components of the Cell Theory.
What is the function of the nucleus?
What is the function of the cytoplasm? acts as a liquid medium to suspend organelles

5. Mitosis and the Cell Cycle

6. I can explain how cells divide from existing cells.
Objective
I can explain how cells divide from existing cells.

7. Cells Come From Preexisting Cells
Cell Division: process by which a cell divides into two new daughter cells

8. Reasons for Cell Division
Growth & Development– living things grow by increasing in the number of cells
Repair / Healing – repair or healing of damage tissues
Replacement – when cells become old they die and are replaced with new cells
Asexual Reproduction–offspring are genetic clones of the parent

9. Asexual Reproduction
Mitosis: cell division that results in two daughter cells each having the same number of chromosomes as the parent cell.

10. The Cell Cycle
Cell cycle: a series of events from the time a cell forms until it divides.
What occurs during the cell cycle:
The cell grows
The cell prepares to divide
The cell divides to form two new daughter cells

11. What would happen if a cell were to simply split into 2 without any advance preparation?

12. Interphase
Interphase: the interval between cell division when a cell grows and replicates its DNA
Consists of 3 stages G1 S G2

13. Interphase: G1 Phase
Cell growth occurs in this stage

14. Interphase: S Phase
DNA synthesis (replication) occurs in this stage

15. DNA Replication
Chromosomes are made up of DNA which carries the cell’s genetic information
Before cell division each chromosome is copied
Each chromosome consists of two identical sister chromatids
When the cell divides the chromatids separate into two different cells

16. Interphase: G2 Phase
Organelles needed for cell division are made in preparation for mitosis

17. Mitosis Mitosis occurs in 4 Stages: Prophase Metaphase Anaphase
Telophase
Hint to help remember the order– IPMAT, or I Picked My Apple Today

18. Mitosis: Prophase
Prophase: stage of mitosis where chromosomes condense and become attached to spindle fibers
chromosomes condense and become visible in a “x” shape and bind to the chromosomes at the centromere
Centriole pairs move to the opposite side of the cell
Nuclear envelope breaks down

19. Mitosis: Metaphase
Metaphase: stage of mitosis at which all chromosomes are aligned in the middle of the cell

20. Mitosis: Anaphase
Anaphase: stage of mitosis during which sister chromatids separate and move toward opposite sides of the cell

21. Mitosis: Telophase
Telophase: stage of mitosis during which chromosomes gather at opposite ends of the cell and a new nucleus forms around each cluster of chromosomes

22. Cytokinesis
Cytokinesis: the division of material outside of the nucleus
The organelles and cytoplasm are roughly divided into two equal halves

24. I can explain how cells divide from existing cells.
Objective
I can explain how cells divide from existing cells.