Presentation on theme: "What is Mitosis?. Mitosis is Cell Division A regular cell copies its chromosomes, then the cell divides and the new cell receives a nucleus with."— Presentation transcript:
What is Mitosis?
Mitosis is Cell Division A regular cell copies its chromosomes, then the cell divides and the new cell receives a nucleus with one full set of identical chromosomes.
Cell Theory 1. All living things are made of cells. 2. Cells are the basic units of structure and function in living thing 3. All cells come from ____________.
EXISTING CELLS 3. All cells come from existing cells.
What is Mitosis? “It is cell division”
Mitosis takes place in the nucleus of the cell. Interphase is between cell division. The cell is not in Mitosis. Most of the cell’s time is in Interphase. Chromosomes become short and think and each one develops a “twin”.
Interphase The nucleus can be seen clearly. Chromosomes are copied near the end of interphase. Interphase
The Phases of Mitosis are… Prophase Prophase Metaphase Metaphase Anaphase and Anaphase and Telophase Telophase People Must Always Try People Must Always Try
Prophase Chromosomes become visible. The membrane around the nucleus begins to disappear. Prophase
Metaphase Chromosome pairs line up along the middle of the cell. Metaphase
Anaphase Chromosome pairs split apart and begin to move to opposite sides of the cell. The cell begins to stretch. Anaphase
Telophase A nuclear membrane forms around each set of chromosomes. The cytoplasm divides. Two new cells are formed. Each new cell then enters Interphase. Telophase
Interphase The two identical new cells start Mitosis or Cell Division over. Interphase
Mitosis in onion root tip.
Cells are at different phases.
Your Quiz Move to the area of the room labeled with the phase of your choice. Move to the area of the room labeled with the phase of your choice.