MC 2000 Chapter : 07Books 1
Document Summary
Mutations cause inactivation of these genes, allowing excessive cell division to occur: caretaker genes: also linked to cancer. Normally protect genome: when caretaker genes are inactivated, mutations in the genome accumulate, genes in these 3 classes encode proteins that help regulate cell birth, cell death (apoptosis), and. Carcinogens: environmental substances that induce cancer-causing mutations in cells. Includes: uv radiations (excessive sunlight, tobacco, asbestos, alcohol, benzene, lead, nickel, countless other chemicals , anything that causes cell damage or death to your cells, increases that chances of you getting cancer. Viruses that cause cancer: hpv- human papilloma virus- causes warts on the skin, mouth, genitals, and larynx. Spread through physical contact with infected areas: 3 out of 4 sexually-active people have hpv. Clears up naturally in 1 or 2 years in 90% of cases: 80% of women will get hpv in their lifetime, 60% of female college students will get hpv during their 4 years in college.
