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Horizon Education and Media
The purpose of ordinary cell division is to divide the cell into identical daughter cells. This type of cell division is called mitosis. Mitosis is needed for organisms to grow and heal.
Mitosis is also used in asexual reproduction, where an organism such as a succulent plant produces an identical offspring from a leaf that makes roots and grows into a new plant.
Every eukaryotic cell (cells with a nucleus) goes through a cell cycle where it does its specialized work, gets ready to divide by duplicating its DNA, then divides its chromosomes during mitosis. Then the cell itself divides into two.
The video series show you chromosomes in different real cells going through mitosis under a microscope.
Develop your Modeling Superpower with Pop Beads
Develop your Modeling Superpower with Pop Beads
Follow the sequence in the handout as you watch the Pop Bead Mitosis video.
Remember, the goal of mitosis is to make identical cells. You will make the DNA in chromosomes replicate into two identical X-shaped chromosomes before mitosis during the Synthesis stage. Synthesis means "making." Then during mitosis these replicated chromosomes separate and move to opposite sides of the cell to produce identical daughter cells.
Once you have done the pop beads activity, make diagrams as shown in the handout.
Pop Bead Mitosis Video
Pop Bead Mitosis Video
We will use pop beads to simulate mitosis. Watch the video: "mitosis demo with beads." (The video starts during cell cycle stages prior to mitosis, which is also called the M phase). Don't focus on the names, focus on the pop beads.
Cell Cycle
Cell Cycle
Summary: mitosis is the part of the cell cycle where the cell divides its chromosomes into identical nuclei. These make identical daughter cells. The pace of the cycle is controlled by “traffic light” chemicals.
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