Cell division - mitosis

• What is the first stage of the cell cycle?

  Interphase
• What is the purpose of mitosis?

  To enable cell division and growth
• What is cytokinesis?

  The division of the cytoplasm in cells
• What happens during prophase?

  Chromosomes condense and become visible
• What occurs during telophase?

  Nuclear envelopes reform around chromosomes
• In which stage of the cell cycle does DNA replication occur?

  Interphase
• What is cancer?

  Uncontrolled cell division leading to tumors
• How do chemotherapy and radiation therapy affect the cell cycle?

  They damage rapidly dividing cells
• If a scientist counts 150 complete cell cycles, how many hours do they last?

  1800 hours
• How long do cells spend in prophase if one complete cycle lasts 12 hours?

  1. 2 hours
• During which hour does synthesis take place in the cell cycle?

  During the S phase of interphase
• At which hour does mitosis take place in the cell cycle?

  During the M phase of the cycle
• How many cell divisions are shown on the graph?

  Not specified in the material
• What are the stages of the cell cycle?

  • Interphase
  • Mitosis
  • Cytokinesis
• What happens during the cell cycle?

  1. Cell growth
  2. DNA replication
  3. Mitosis
  4. Cytokinesis
• What are the effects of chemotherapy and radiation therapy on cancer cells?

  • Kill rapidly dividing cells
  • Inhibit new blood vessel formation