Unit 4 Cell Communication and Cell Cycle

Learning Objectives

1. Describe the ways that cells can communicate with one another.

2. Explain how cells communicate with one another over short and long distances.

3. Describe the components of a signal transduction pathway.

4. Describe the role of components of a signal transduction pathway in producing a cellular response.

5. Describe the role of the environment in eliciting a cellular response.

6. Describe the different types of cellular responses elicited by a signal transduction pathway.

7. Explain how a change in the structure of any signaling molecule affects the activity of the signaling pathway.

8. Describe positive and/ or negative feedback mechanisms.

9. Explain how negative feedback helps to maintain homeostasis.

10. Explain how positive feedback affects homeostasis.

11. Describe the events that occur in the cell cycle.

12. Explain how mitosis results in the transmission of chromosomes from one generation to the next.

13. Describe the role of checkpoints in regulating the cell cycle.

14. Describe the effects of disruptions to the cell cycle on the cell or organism.