Cancer Reading Questions
After reading pages 126 and 127 in Campbell answer these questions.
- What system controls the cell cycle?
Cell cycle control system
- What type of molecules are used to signal the "stop" and "go-ahead" messages to a cell?
- What will a normal cell do when it gets the G1 go-ahead signal?
complete the cell cycle
- What happens if a normal cell never receives the G1 go-ahead signal?
Go to a resting stage (G0)
- What is cancer?
Cells with a "severely deranged cell cycle control system".
- 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.
- What is the danger from a malignant cancer?
The most dangerous attribute is their ability to spread into neighboring tissues.
- Define metastasis.
The spread of cancer cells beyond their original site.
- Describe the four site-based categories of cancer.
- Carcinomas - originate in body coverings such as skin or intestine linings.
- Sarcomas - arise in body support tissues such as bone and muscle.
- Leukemias - arise in blooding-forming tissues such as blood marrow.
- Lymphomas - arise in blooding-forming tissues such as lymph nodes.
- How can radiation which disrupts cell division be more harmful to cancer cells than normal cells?
Cancer cells divide more rapidly.
- What are side effects of radiation cancer treatment?
Damage to cells , hair loss and nausea.
- How do antimitotic drugs combat cancers?
These drugs interfere with the mitotic spindles and prevent cell replication.
- What actions are you doing now to reduce your risk of cancer?
- What actions do you think you should be doing to reduce your risk of cancer?
Exercise, good diet, not smoking, reduce sun exposure.