The Cell Cycle: Phases of Growth, Reproduction, and Function

1. 5.1 The Cell Cycle 2.1 Atoms, Ions, and Molecules • Set up Cornell Notes on pg. 61 • Topic: 5.1 The Cell Cycle • Essential Question: • Using Table 5.2 to help you: Do you think a skin cell would have a long or short G1 stage? Explain why. • Using Table 5.2 to help you: Do you think a skin cell would have a long or short G1 stage? Explain why. KEY CONCEPT Cells have distinct phases of growth, reproduction, and normal functions.

2. Cell Cycle Posters (P. 134-137 in text) • In groups of four • Create a poster describing each of the four main stages of the cell cycle • You can make a picture bubble map, flow map, or any other type of poster • MUST INCLUDE: • Cell cycle description • Short description of what is happening in each stage • Graphic of the cell cycle Homework: 5.1 notes Include all vocab, on pg. 60 please draw a picture of the cell cycle

3. On pg. 56 of your INB please draw a picture bubble map of the Cell Cycle. (Each part labeled and explained) G1 S G2

4. Why do you think that you always have to cut your hair, your fingernails, and the lawn? The growth is made by new cells being made.

5. KEY CONCEPT Cells have distinct phases of growth, reproduction, and normal functions.

6. Cycles

7. Your body cells go through a cycle too. This cycle allows new cells to be created to heal or replace dead or damaged cells.

8. The cell cycle is a regular pattern of growth, DNA replication, and cell division that occurs in eukaryotic cells. • The cell cycle is the process of duplicating somatic or body cells

9. STAGE 1- Gap 1 (G1) • Cells carry out their normal functions • Cells increase in size • Organelles increase in number * Cells spend most of their time here

10. STAGE 2- Synthesis (S) • Cell makes a copy of its nuclear DNA • By the end of S stage the cell contains 2 complete sets of DNA

11. STAGE 3- Gap (G2) • Cells continue to carry out their normal functions • Additional growth occurs

12. STAGE 4 (includes 2 processes) • Mitosis • The division of a body cell’s nucleus and its contents • 2 new nuclei form • Cytokinesis • The process that divides the cell cytoplasm *

13. The result of the cell cycle is 2 daughter cells that are identical to the original cell

14. The Cell Cycle Video (4m35s- 9m32s)

15. Cells divide at different rates. • The rate of cell division varies with the need for those types of cells. • Some cells are unlikely to divide (G0).