• Normal cells are arranged in an orderly manner within a tissue.
  
  
• Stimulatory growth factors and inhibitory growth factors regulate a cell cycle.
  
  

1. What type characteristics do normal cells have that ensure a particular shape and function?
   Answer

Art Quiz

• Cell Cycle

• Cancer cells have characteristics that can be associated with their ability to grow uncontrollably.
  
  
• Mutations of proto-oncogenes and tumor-suppressor genes are linked to the development of cancer.
  
  

1. What characteristics do cancer cells have that allow them to grow uncontrollably?
   Answer

Essential Study Partner

• Gene Regulation

• A number of agents are known to bring about the mutations that cause cancer, and a mutated gene can be inherited.
  
  
• Environmental factors play a role in the development of cancer.
  
  

1. Can certain types of cancer be inherited? Why?
   Answer
   
   
2. What agents are known to bring about mutations that cause cancer?
   Answer
   
   
3. What environmental factors play a role in the development of cancer?
   Answer

Art Quiz

• Potential Carcinogen
• Potential Carcinogen
• Potential Carcinogen

Reading

• Skin Cancer

• There are few routine screening tests for specific cancers, and cancer often goes undetected until it is advanced. New ways to diagnose cancer are under investigation.
  
  
• Surgery, radiation, and chemotherapy are presently the standard ways of treating cancers.
  
  
• Molecular knowledge of cancer has produced many specific types of drugs and therapies that are now in clinical trials.
  
  
• It is possible to take protective steps to reduce the risk of cancer.
  
  

1. What routine screening tests are available to detect and diagnose cancer?
   Answer
   
   
2. What three types of therapy are presently the standard ways to treat cancer?
   Answer
   
   
3. How has the molecular knowledge of cancer helped to develop specific types of drugs and therapies?
   Answer
   
   
4. What protective steps can you take to reduce your risk of cancer?
   Answer

Bioethical Focus

• Alcohol and Tobacco Use