Mitosis

• What is the cell cycle?


  It is when cells in the body divide to produce more cells, so your body can grow and replace damaged cells and cells grow and divide over and over again.
• What are the three separate growth stages called?


  G, S and G2
• What is 'gap phase one'?


  At this phase, the cell grows and new cell structures and proteins are made.
• What is the 'S' phase?


  At this phase, cells replicate its DNA, so that when it splits during mitosis and the two new cells will contain identical DNA.
• What is 'gap phase two'?


  At this phase, cells keep growing and proteins needed for cell division are made.
• Where does the cell cycle start and end?

  With mitosis.
• Define mitosis.


  Mitosis is when a cell reproduces itself by splitting to form two identical offspring.
• What is the first stage of mitosis?

  The cell has two copies of its DNA all spread out in long strings.
• What is the second stage of mitosis?


  The DNA forms X-shaped chromosomes. Each 'arm' of a chromosome is an exact copy of the other. This happens before the cell divides.
• What is the third stage of mitosis?


  The chromosomes then line up at the center of the cell and cell fibers pull them apart. The two arms of each chromosome go to opposite ends of the cell.
• What is the fourth stage of mitosis?


  Membranes from around each of the sets of chromosomes. these become nuclei of the two new cells.
• What is the fifth and final stage of mitosis?


  The cytoplasm divides; two new cells containing exactly the same DNA as they're genetically identical to each other and to the parent cell.