As humans age, the rate of cell division _____, which is intended to _______. Select one: a. increases, decrease the risk of cancer b. Decreases, decrease the risk of cancer c. Increases, increase stem cell division d. Decreases, increase stem cell division

For cancer to occur in an individual which of the following must occur?   a an accumulation of multiple mutations in many different cells b a deletion of part of a gene c an accumulation of multiple mutations in an individual cell d chromosomal segment deletions e triploidy

22 A study was conducted to see how people respond to medical statistics. Each subject was given the following descriptions of three screening tests for cancer. If you have this test every 2 years, it will reduce your chance of dying from cancer A by around one third over the next 10 years. Test A: Test B: If you have this test every 2 years, it will reduce your chance of dying from cancer B from around 3 in 1,000 to around 2 in 1,000 over the next 10 years. Test C: If around 1,000 people have this test every 2 years, 1 person will be saved from dying from cancer C every 10 years. a. One of these describes the number needed to treat cancer (see Extensions Task 21). Which one? b. One describes the absolute risk reduction. Which one? SUBTRACT c. One describes the relative risk. Which one? X Greater

Ultimately, cancer kills because it spreads and disturbs homeostasis.  Consider, for example, a kidney cancer that metastasizes to the lungs and liver.  What are some specific aspects of homeostasis that the spreading disease could affect?