Cancer Reading Questions

After reading pages 126 and 127 in Campbell answer these questions.

  1. What system controls the cell cycle?

    Cell cycle control system

  2. What type of molecules are used to signal the "stop" and "go-ahead" messages to a cell?

    proteins

  3. What will a normal cell do when it gets the G1 go-ahead signal?

    complete the cell cycle

  4. What happens if a normal cell never receives the G1 go-ahead signal?

    Go to a resting stage (G0)

  5. What is cancer?

    Cells with a "severely deranged cell cycle control system".

  6. Compare and contrast benign and malignant tumors.

    Both are an abnormally growing mass of body cells. Benign tumors remain at the original site in the body, while a malignant tumor results from cancer cells.

  7. What is the danger from a malignant cancer?

    The most dangerous attribute is their ability to spread into neighboring tissues.

  8. Define metastasis.

    The spread of cancer cells beyond their original site.

  9. Describe the four site-based categories of cancer.
    1. Carcinomas - originate in body coverings such as skin or intestine linings.
    2. Sarcomas - arise in body support tissues such as bone and muscle.
    3. Leukemias - arise in blooding-forming tissues such as blood marrow.
    4. Lymphomas - arise in blooding-forming tissues such as lymph nodes.
  10. How can radiation which disrupts cell division be more harmful to cancer cells than normal cells?

    Cancer cells divide more rapidly.

  11. What are side effects of radiation cancer treatment?

    Damage to cells , hair loss and nausea.

  12. How do antimitotic drugs combat cancers?

    These drugs interfere with the mitotic spindles and prevent cell replication.

  13. What actions are you doing now to reduce your risk of cancer?

    Varies

  14. What actions do you think you should be doing to reduce your risk of cancer?

    Exercise, good diet, not smoking, reduce sun exposure.