cell division by mitosis

• What is found in the nucleus of both plant and animal cells?

  Chromosomes made of DNA
• How many chromosomes does the cell mentioned in the video contain?

  Four chromosomes
• What is a key fact about body cells regarding chromosomes?

  Body cells contain two of each chromosome, meaning they are paired
• How many pairs of chromosomes do human body cells contain?

  23 pairs of chromosomes
• What are gametes in relation to chromosomes?

  Gametes have chromosomes that are not paired
• What do chromosomes carry that determines many of our features?

  Genes
• Why do cells need to divide?

  Because animals and plants contain a large number of cells
• What are the two ways cells can divide?

  Mitosis and meiosis
• What are the three main stages of the cell cycle involving mitosis?

  1. DNA replication to form two copies of each chromosome
  2. Mitosis, where one set of chromosomes is pulled to each end of the cell
  3. Division of the cytoplasm and cell membrane to form two identical cells
• What happens to the DNA in the first stage of the cell cycle?

  The DNA replicates to form two copies of each chromosome
• What occurs during the second stage of the cell cycle?

  Mitosis takes place, and the nucleus divides
• What is the outcome of the final stage of the cell cycle?

  The cytoplasm and cell membrane divide to form two identical cells
• How does the number of chromosomes in the original cell compare to the two identical cells after mitosis?

  Each identical cell has the same number of chromosomes as the original cell
• What are the functions of mitosis?

  • Essential for growth and development of multicellular organisms
  • Repairs damaged tissues, such as healing a broken bone
  • Occurs during asexual reproduction
• What type of organisms undergo mitosis for growth and development?

  Multicellular organisms
• When does mitosis occur in relation to tissue repair?

  Mitosis occurs when an organism repairs itself
• What is one example of a process where mitosis is essential?

  When a broken bone heals
• What will be covered in a later video related to cell division?

  Meiosis and asexual reproduction