cell division by mitosis

• What are chromosomes made of?

  The molecule DNA
• How many pairs of chromosomes do human body cells contain?

  23 pairs of chromosomes
• What are gametes?

  Cells with unpaired chromosomes
• What do chromosomes carry that determines features?

  A large number of genes
• What is the purpose of the cell cycle?

  Cells must be able to divide
• What are the two ways cells can divide?

  Mitosis or meiosis
• What does the cell cycle consist of?

  Three main stages
• What happens in the first stage of the cell cycle?

  DNA replicates to form copies
• What does the cell copy during the first stage?

  Internal structures like mitochondria
• What occurs during the second stage of the cell cycle?

  Mitosis takes place
• What happens to the chromosomes during mitosis?

  One set is pulled to each end
• What divides in the final stage of the cell cycle?

  The cytoplasm and cell membrane
• What do the two identical cells at the end contain?

  Two pairs of chromosomes
• What is the first function of mitosis?

  Essential for growth and development
• What is the second function of mitosis?

  Repairs when an organism heals
• What is the third function of mitosis?

  Occurs during asexual reproduction