http://www.ck12.org Chapter 1. Human Biology
FIGURE 1.114
The mutations that cause cancer may oc-
cur when people are exposed to radiation,
including the radiation from sunlight.
Vocabulary
- cancer: Disease that causes cells to divide out of control.
- carcinogen: Substance that can cause cancer.
- mutations: Random errors in genes.
- radon: Natural radioactive gas that seeps into buildings from the ground and can cause cancer.
- tumor: Abnormal mass of tissue.
- UV radiation: Invisible radiation that is a part of sunlight.
Summary
- Cancer is caused by mutations, which can be caused by pathogens, chemicals, or radiation.
- Cancer can be treated with surgery, drugs, and radiation.
Practice
Use the resources below to answer the questions that follow.
- How Cancer Cells Grow and Divideat http://www.teachersdomain.org/asset/tdc02_vid_oncogene/