Human Biology

(Sean Pound) #1

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.


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