mitosis

• What is mitosis?

  Cell division that generates new cells for growth and repair. The division of one cell into two genetically identical daughter cells
• What types of organisms undergo mitosis?

  Multi-cellular Organisms
• Why do Multicellular organisms undergo mitosis?

  To grow and develop or replace cells
• What is the stage of the cell cycle when the cell divides called?

  Mitosis
• What is the cell cycle?


  series of events that cells go through as they grow and divide
• What happens in the First stage of the Cell Cycle?

  1.) The DNA is all spread out in long strings
• What happens in the Second stage of the Cell Cycle?

  2.) Before the cell divides, the cell has to grow and increase the amount of subcellular structures it has such as mitochondria and ribosomes
• What happens in the Third stage of the Cell Cycle?

  3.) The DNA is duplicated. so there's one copy of each chromosome for each new cell. The DNA is Copied and forms X-shaped chromosomes. Each 'arm' of the chromosome is an exact duplicate of the other.

  
  

  Now the Cell is ready for mitosis
• What happens in the Fourth stage (The First stage of Mitosis) of the Cell Cycle?

  4.) the Chromosomes line up at the centre of the cell and cell fibre pull them apart. the two arms of each chromosome go to opposite ends of the cell
• What happens in the Fifth stage (The Second stage of Mitosis) of the Cell Cycle?

  5.) Membranes form around each of the sets of the chromosomes. These become the nuclei of the two new cells - the nucleus has divided
• What happens in the Sixth stage (The Third stage of Mitosis) Of the Cell Cycle?

  6.) Lastly, the cytoplasm and cell membrane divide.

  
  

  The cell has now produced two new daughter cells. the daughter cells contain exactly the same DNA - they're identical. Their DNA is also identical to the parent cell
• How many times does a Body cell divide during Mitosis?

  Once
• When cells undergo mitosis, will the new cells be genetically different or genetically identical as the parent cell?

  Mitosis Produces Cells that are Genetically identical to the parent cell
• How do you find out the length of a stage in the cell cycle?

  (number of cells in that stage / total number of cells counted) x length of the cell cycle