Lesson 05 Assignment - Lesson 05 Assignment 1. What are the...

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Lesson 05 Assignment 1. What are the three most common forms of cancer and what are the three most deadly? Name two  forms of cancer that have high 5-year survival rates and two that have low 5-year survival rates. Correct Answer: Excluding skin cancers, the three most common forms of cancer  are Breast/Prostate, Lung, and Colon Cancers. The most deadly  forms of cancer are Lung, Breast, and Colon Cancer. Cancers with  high 5-year survival rates are Breast, Prostate, and Testicular  Cancer. Cancers with low 5-year survival rates are Pancreatic,  Lung, and Liver Cancer. 2. What is initiation and promotion? Explain why cancer could  be looked at as a preventable illness. Correct Answer: Cancer is viewed as being caused by a two-step process, initiation  and promotion.  Initiation is a factor or event that causes a change in  the cell’s genome, making it abnormal and cause the cancer.  Promotion is a division-stimulating event that causes these abnormal  cells to divide, and form the cancerous tumor. Eighty percent of  cancers are thought to be due to environmental/lifestyle factors,  therefore making many cancers preventable if these issues can be  addressed. Such issues include smoking, high fat, low fiber diets,  excessive sun exposure, lack of exercise, and chemical exposure,  including contaminates found in air, water, and household painting  and cleaning compounds. Removing many of these lifestyle and 
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This note was uploaded on 03/26/2008 for the course BIOL 155 taught by Professor Agnewrobertlain during the Spring '08 term at Pennsylvania State University, University Park.

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Lesson 05 Assignment - Lesson 05 Assignment 1. What are the...

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