Chromosomes and mitosis

• What do chromosomes contain?

  Genetic information
• What is the purpose of the cell cycle?

  To make new cells for growth, development, and repair
• How many copies of chromosomes are shown in the human cell diagram?

  Two copies
• What are the main stages of the cell cycle?

  • Growth
  • Replication
  • Mitosis
• What happens to DNA in a cell that is not dividing?

  It is spread out in long strings
• What must a cell do before it divides?

  It must grow and increase the amount of cellular structures
• What does the cell do to its DNA before division?

  It replicates its DNA
• What shape do chromosomes take after DNA replication?

  1. shaped chromosomes
• What do the arms of the chromosome represent after replication?

  Each arm is an exact duplicate of the other
• What happens during mitosis regarding the chromosomes?

  The chromosomes line up at the center of the cell
• What pulls the chromosomes apart during mitosis?

  Cell fibers
• What forms around each set of chromosomes after they are pulled apart?

  Membranes form around each set
• What do the membranes around the chromosomes become?

  The nuclei of the two new cells
• What happens to the cytoplasm and cell membrane at the end of mitosis?

  They divide
• How many daughter cells are produced at the end of mitosis?

  Two daughter cells
• How does the DNA of the daughter cells compare to the parent cell?

  They contain exactly the same DNA
• Are the daughter cells identical to each other?

  Yes, they are identical
• What is the significance of the identical DNA in daughter cells?

  It ensures genetic continuity