Cancer+Paper+CC

Wiki Assignment on Cancer (Answers in Book--Chapter 19)

Define: apoptosis-programmed cell death in multicellular organisms when a cell is damaged telomeres-part of repetitive DNA at the end of each chromosome that helps to protect it from being damaged metastisis-spread of disease or cancer from one organ to another or from one part of a body to another tumor-neplasia-- abnormal swelling of an area, but not after an injury or anything like that proto-oncogenes-proteins that help regulate cell growth oncogenes-gene with a DNA sequence which causes cancer-- a broken proto-oncogene growth factor- natural protein that helps stimulate cellular differentiation tumor suppressor gene- like the brakes to help stop cancer cells from dividing and continuing to divide oncology- doctors and branch of medicine that specifically study tumors carcinoma- malignant cancer that comes from epithelial cells sarcoma- cancer of tissue-- supportive/connective tissues leukemia-cancer of blood or bone marrow lymphoma-cancer that originates in the lymphocytes (white blood cell in immune system)

3. Why don't cancer cells die? Cancer cells don't die because they are rapidly dividing. When other cells are doing this or are damaged they will go through apoptosis, which is when the cell kills itself. Cancer cells don't have this. Therefore, the cancer cells do not stop dividing and just continue to go on instead of dieing. 8. What are the most common cancers cases for males and females? The most common cases for males are prostate and for females is breast. 9. What are the most common cancer deaths for males and females? The most common cancer deaths for males and females is lung cancer.
 * 1. What do cancer cells look like? Cancer cells are rapidly dividing
 * 2. What is unusual about the nuclei of cancer cells?
 * 4. Describe the three phases of the development of cancer.
 * 5. Mutations in what two types of genes lead to uncontrollable growth?
 * 6. What is p53? How does it cause cancer?
 * 7. What is RB? How does it cause cancer?