Principles of Biology I                                                                                     

Dr. Shonah A. Hunter

Chapter 9 – The Cell Cycle and Cellular Reproduction

Chapter Outline and Lecture Objectives

YOU WILL BE LEARNING THIS IN MORE DETAIL IN YOUR LAB SESSION.  YOU ARE RESPONSIBLE FOR THE INFORMATION YOU LEARN IN LAB ON THE LECTURE EXAM

Living things Reproduce

Introduction

Living things pass on genetic information to the next generation.  In this chapter, we will discuss how single-celled organisms divide to produce new offspring.  We will also describe how cells divide in

multi-cellular organisms to produce new cells for growth and also to replace damaged and worn out

cells.  In the last part of the chapter, we will discuss the relationship of the cell cycle to cancer.

Objectives

• Describe the purpose of cell division
• Identify and recognize the different stages of mitosis
• Identify the major events that occur at each stage
• Describe the cell cycle and how it is controlled
• Describe how prokaryotes divide
• Describe how cell division and the cell cycle relate to cancer.

Lecture Outline

I. The Cell Cycle

            A. The stages

            B. Control of the cell cycle

II. Prokaryotic cell division

            A. Binary fission

            B. Comparing Prokaryotes and Eukaryotes

III. Mitosis and Cytokinesis

            A. Eukaryotic chromosomes

            B. Mitosis in animal cells (details in lab)

            C. How plant cells divide (details in lab)

            D. Cytokinesis in animal and plant cells.

IV. The Cell cycle and Cancer

Study Questions (write out the answers based on material from lecture, the text book, and the lab manual.

1. What are the different stages of the cell cycle and what significant event(s) happen in each stage?

2. How is the cell cycle controlled?

3. What does apoptosis mean and how does it relate to the cell cycle?

4. What are the purposes of cell division?

5. How do prokaryotes divide?

6. Why is there a different mechanism for eukaryotic cells vs. prokaryotes? How do eukaryotes divide?

7. Describe the significant structures of a eukaryotic chromosomes.

8. When do sister chromatids become chromosomes?

9. What are the stages of cell division and what is happening to the chromosomes at each stage?

10. How do the daughter cells compare to the mother cell in terms of nuclear material?

11. What is the difference in mitosis between animal and plant cells?

12. What is Cytokinesis?

13. How does it differ between animal and plant cells?

14. What are the differences between normal and cancerous cells?

15. What is currently understood about the origin of cancer cells?

16. How does cancer and the cell cycle relate to each other?

Additional study materials

USE THE REVIEW MATERIALS AT THE END OF THE TEXT BOOK CHAPTER

Go to the web site for the book and check out the self study page online.

 http://highered.mcgraw-hill.com/sites/007352543x/student_view0/index.html