Cell Cycle Chp 5.1 Chapter 5: Cell Growth and Division Section 1: The Cell Cycle Cell Cycle Chp 5.1

Do Now! Chapter 5: Cell Growth and Division Section 1: The Cell Cycle What do multicellular organisms use this type of cell division for? Growth and development Producing gametes Halving the number of chromosomes Getting rid of cancer

Mitosis Foldable Activity Chapter 5: Cell Growth and Division Section 1: The Cell Cycle Agenda The Cell Cycle Mitosis Foldable Activity Mitosis Go over homework

But HOW do cells come from other cells? Chapter 5: Cell Growth and Division Section 1: The Cell Cycle What are the three parts of the cell theory? 1) The cell is the most basic unit of life 2) All living things are made of cells 3) All cells come from other cells But HOW do cells come from other cells?

Why might cells need to make more cells? Chapter 5: Cell Growth and Division Section 1: The Cell Cycle The Cell Cycle Just like all other forms of life, individual cells (even yours!) go through different stages of growth. Since this process happens over and over again in the daughter cells (the cells that get made), it is called a Cell Cycle. What are the different stages? Why might cells need to make more cells?

Chapter 5: Cell Growth and Division Section 1: The Cell Cycle Draw this chart in your notebook. We will fill it out during the next slide!

Gap 1 (G1) Synthesis (S) Gap 2 (G2) and then… MITOSIS! INTERPHASE: Chapter 5: Cell Growth and Division Section 1: The Cell Cycle INTERPHASE: Gap 1 (G1) Synthesis (S) Gap 2 (G2) and then… MITOSIS!

In Gap 1, the cell is growing and carries out its normal functions. Chapter 5: Cell Growth and Division Section 1: The Cell Cycle Interphase In Gap 1, the cell is growing and carries out its normal functions. The cell also checks to make sure the cell can continue to S phase. During Synthesis, the cell creates a copy of its DNA (doubles its chromosomes).

The cell also checks to make sure the duplicated DNA is undamaged. Chapter 5: Cell Growth and Division Section 1: The Cell Cycle The Cell Cycle In Gap 2, the cell continues growing and carrying out its normal functions. The cell also checks to make sure the duplicated DNA is undamaged. During Mitosis, the cell begins dividing!

Eukaryotic Cell Cycle (YouTube link) Chapter 5: Cell Growth and Division Section 1: The Cell Cycle Eukaryotic Cell Cycle (YouTube link)

MITOSIS! Next Up: Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis Next Up: MITOSIS!

Cut lasagna creases to the middle fold Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis Hot dog fold Hamburger fold Lasagna fold (hungry yet?) Cut lasagna creases to the middle fold Fold over and label your book! Mitosis

Mitosis Animation (YouTube link) Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis Mitosis Animation (YouTube link)

Mitosis During Prophase: Chromosomes condense Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis During Prophase: Chromosomes condense Nuclear membrane breaks down Centrioles move to ends of the cell. Mitosis Prophase M A T

Where do the spindle fibers come from? Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis During Metaphase: Spindle fibers attach to chromosomes Chromosomes align at cell equator Mitosis P Metaphase A T Where do the spindle fibers come from?

Mitosis During Anaphase: Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis During Anaphase: Chromatids separate and move to opposite sides of the cell. Mitosis P M Anaphase T

Mitosis During Telophase: Nuclear membrane reforms Chromosomes unpack Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis During Telophase: Nuclear membrane reforms Chromosomes unpack Spindle fibers fall apart Mitosis P M A Telophase

Mitosis During Cytokinesis Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis During Cytokinesis Cell splits apart into genetically identical daughter cells Mitosis P D M O A N T E!

Mitosis in Real-Time (YouTube link) Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis Mitosis in Real-Time (YouTube link)

How the Cell Cycle Works (YouTube link) Chapter 5: Cell Growth and Division Section 2: Mitosis and Cytokinesis How the Cell Cycle Works (YouTube link)