NH+19.1+problems

Bold Words telomeres- tip of the end of chromosomes initiation- a single cells undergoing a mutation that causes it to begin to divide repeatedly promotion-tumor develops and tumor cells continue to divide undergoing mutations along the way progression- one cell undergoes a mutation that gives t a selective advantage over the cells. repeated several times until there is acell that can invade surrounding tissues angiogenesis-formation of new blood vessels; one mechanism by which cancer spreads metastasis- spread of cancer from the place of origin throughout the body; caused by the ability of cancer cells to migrate and invade tissues proto-oncogenes- normal gene that can become an oncogene through mutation tumor-suppressor genes- gene that codes for a protein that ordinarily suppresses cell division; inactivity can lead to a tumor oncogenes- cancer causing gene growth factor- chemical signal that regulates mitosis and differentiation of cells that have receptors for it; important in such processes as fetal development, tissue maintenance and repair, and hematopiesis, sometimes a contributing factor in cancer cyclin- protein that regularly increases and decreases in concentration during the cell cycle oncology- study of cancer oncologist- cancer doctor carcinomas- cancer arising in epithelial tissue sarcomas- cancer in muscles and connective tissue leukemia- cancer in the blood forming tissues leading to the overproduction of abnormal white blood cells lymphomas-cancer in lymphatic tissue

Questions: WRITE THE QUESTION TOO 1. they have mutations that make not able to stop reproducing 2. proto-oncogenes and tumor-suppressor genes 3. lung cancer, colorectal cancer, breast cancer,