1. Cell Division
And Mitosis
Chapter Menu

2. Cell Division Cell Division: Mitosis and Meiosis Meiosis Fertilization
Egg
Sperm
Meiosis
Fertilization
Mitosis
Lesson 1

3. How can one cell become a multicellular organism?
Chapter Introduction

4. Cell Division Prokaryote cells Fission Asexual Reproduction
Eukaryote cells
Mitosis
Growth
Repair
Meiosis
Sexual Reproduction
Chapter Introduction

5. The Cell Cycle and Cell Division
What are the phases of the cell cycle?
Why is the result of the cell cycle important?
Lesson 1 Reading Guide

6. The Cell Cycle Cycles occur in nature.
The life cycles of living organisms such as trees are affected by the change in seasons.
Bill Brooks/Alamy
Lesson 1

7. The Cell Cycle (cont.)
Most cells in an organism go through a cycle of growth, development, and division called the cell cycle.
There are two main phases in the cell cycle: interphase and the division phase.
Growth
Development
Division
Cell cycle
Interphase
Lesson 1

8. The Cell Cycle (cont.) What are the two main phases of the cell cycle?
Lesson 1

9. Interphase
Interphase has 3 stages: G1, S and G2. G1 S G2
Lesson 1

10. Interphase (cont.) The “G” stands for “gap”.
The “S” stands for “synthesis”.
During the G1 and G2 phase, there is growth and organelle replication.
Cells spend most of their time in the interphase.
Lesson 1

11. Interphase (cont.)
During the S phase, the cell’s DNA is duplicated and arranged as paired chromosomes called sister chromatids held together by a centromere. S
sister chromatids
centromere
Lesson 1

12. The Division Phase
The division phase has 2 stages: mitosis and cytokinesis.
During mitosis, the nucleus is duplicated.
Mitosis has 4 phases.
Mitosis
Cytokinesis
Nucleus
Lesson 1

13. The Mitotic Phase (cont.)
Lesson 1

14. The Mitotic Phase (cont.)
Lesson 1

15. The Mitotic Phase (cont.)
Lesson 1

16. The Mitotic Phase (cont.)
Lesson 1

17. The Mitotic Phase (cont.)
During cytokinesis, the cytoplasm divides and forms two new daughter cells.
Lesson 1

18. Lesson 1

19. Results of Cell Division
The cell division is important for：
Growth of multicellular organisms
Repair of damaged tissues
Replacement of worn cells
Reproduction of unicellular organisms
Growth
Repair
Replacement
Reproduction
Lesson 1

20. Results of Cell Division (cont.)
Why is the result of the cell cycle important?
Lesson 1

21. During interphase, most cells go through periods of rapid growth and replication of organelles, copying DNA, and preparation for cell division.
Lesson 1

22. The nucleus and its contents divide during mitosis.
The cytoplasm and its contents divide during cytokinesis.
Lesson 1

23. What takes place during the S stage of interphase?
A. DNA replication
B. preparation for cell division
C. rapid growth of organelles
D. division of the nucleus
Lesson 1

24. What are the two identical chromosomes that make up a duplicated chromosome called?
A. centromeres
B. coils
C. organelles
D. sister chromatids
Lesson 1

25. During which phase of mitosis do the duplicated chromosomes move to the middle of the cell?
A. prophase
B. metaphase
C. anaphase
D. telophase
Lesson 1

26. Which phase of the cell cycle includes the cell’s growth and development?
A. Cytokinesis
B. Mitosis
C. Interphase
D. Metaphase
Chapter Review - MC

27. What structure holds sister chromatids together?
A. daughter chromatids
B. cytoplasm
C. organelles
D. centromere
Chapter Review - MC

28. During which stage does a cell experience growth and chromosome replication?
A. S
B. G
C. G1
D. G2
Chapter Review - MC

29. During which stage do the nucleus and its contents divide?
A. anaphase
B. interphase
C. mitosis
D. cytokinesis
Chapter Review - MC

30. During which phase of mitosis does a nuclear membrane grow, forming two identical nuclei?
A. anaphase
B. telophase
C. prophase
D. metaphase
Chapter Review - MC

31. 1. Cell division produces two identical cells.
Do you agree or disagree?
1. Cell division produces two identical cells.
2. Cell division is important for growth.
3. At the end of the cell cycle, the original cell no longer exists.
Lesson 1

32. Interactive Concept Map Chapter Review Standardized Test Practice
Key Concept Summary
Interactive Concept Map
Chapter Review
Standardized Test Practice
Chapter Review Menu

33. Through cell division, one cell can produce new cells to grow and develop into a multicellular organism.
The BIG Idea

34. Cell Division Cell Division: Mitosis and Meiosis Meiosis Fertilization
Egg
Sperm
Meiosis
Fertilization
Mitosis
Lesson 1

35. Cell Division (Mitosis)B D
Interphase E
Division
Phase F G H A  
Instructions
Cut out the diagram above and label all the different phases from A to I (e.g. from G1 to cytokinesis). Then link the four mitosis phases (D to G) to the four rows on the right.
Instructions
Cut out all the squares above, arrange them according to the correct sequence starting with prophase on the first row.
Draw a line to link the circular diagram to the correct phase.