Cell division by Mitosis

• What is the importance of mitosis?

  Mitosis is essential for growth, repair, and asexual reproduction.
• What are the stages of the cell cycle involving mitosis?

  • DNA replication
  • Mitosis
  • Cytokinesis (division of cytoplasm and cell membrane)
• What do chromosomes contain?

  Chromosomes contain DNA and genes.
• How many pairs of chromosomes do human body cells contain?

  Human body cells contain 23 pairs of chromosomes.
• What are gametes?

  Gametes are cells that contain unpaired chromosomes.
• What is the role of genes in chromosomes?

  Genes determine many of our features.
• What happens during the first stage of the cell cycle?

  • DNA replicates to form two copies of each chromosome
  • The cell grows
  • Internal structures like mitochondria and ribosomes are copied
• What occurs during mitosis?

  One set of chromosomes is pulled to each end of the cell, and the nucleus divides.
• What is the final stage of the cell cycle?

  • The cytoplasm and cell membrane divide
  • Two identical cells are formed
• How does mitosis contribute to the growth of multicellular organisms?

  Mitosis increases cell number, facilitating growth and development.
• Why is mitosis important for healing broken bones?

  Mitosis is important for repairing tissues and replacing damaged cells during healing.
• In what type of reproduction does mitosis occur?

  Mitosis occurs during asexual reproduction.
• What is the outcome of mitosis?

  • One cell divides into two identical cells
  • Each new cell has the same number of chromosomes as the original cell