Human Biology

http://www.ck12.org Chapter 1. Human Biology 1.53 Pathogens List common causes of infectious diseases and how they are spread. ...

1.53. Pathogens http://www.ck12.org Worldwide, the most common disease caused by bacteria is tuberculosis (TB). TB is a serious ...

http://www.ck12.org Chapter 1. Human Biology FIGURE 1.106 This picture shows a one-celled organism calledGiardia lamblia. It is ...

1.53. Pathogens http://www.ck12.org FIGURE 1.108 As this picture shows, thousands of tiny droplets are released into the air whe ...

http://www.ck12.org Chapter 1. Human Biology FIGURE 1.109 Some diseases are spread by insects. The type of mosquito shown here c ...

1.54. HIV and AIDS http://www.ck12.org 1.54 HIV and AIDS Explain how the virus known as HIV causes AIDS. What does a red ribbo ...

http://www.ck12.org Chapter 1. Human Biology HIV and the Immune System How does an HIV infection develop into AIDS? HIV destroys ...

1.54. HIV and AIDS http://www.ck12.org Summary HIV causes AIDS by destroying disease-fighting cells produced by the immune syst ...

http://www.ck12.org Chapter 1. Human Biology 1.55 Preventing Infectious Diseases State how infectious diseases can be prevented ...

1.55. Preventing Infectious Diseases http://www.ck12.org FIGURE 1.111 This picture shows the proper way to wash your hands. Freq ...

http://www.ck12.org Chapter 1. Human Biology MEDIA Click image to the left for more content. What is a communicable disease? Wh ...

1.56. Cancer http://www.ck12.org 1.56 Cancer Describe causes and treatments of cancer. Why is tanning bad for your health? It ...

http://www.ck12.org Chapter 1. Human Biology FIGURE 1.112 The mutations that cause cancer may occur when people are exposed to p ...

1.56. Cancer http://www.ck12.org FIGURE 1.113 The mutations that cause cancer may oc- cur when people are exposed to chemical ca ...

http://www.ck12.org Chapter 1. Human Biology FIGURE 1.114 The mutations that cause cancer may oc- cur when people are exposed to ...

1.56. Cancer http://www.ck12.org What is an oncogene? How do receptors made by oncogenes differ from "normal" receptor cells? H ...

http://www.ck12.org Chapter 1. Human Biology 1.57 Diabetes Explain why diabetes occurs. What do these foods have in common? Th ...

1.57. Diabetes http://www.ck12.org are damaged, the pancreas cannot make insulin. Type 1 diabetes usually develops in childhood ...

http://www.ck12.org Chapter 1. Human Biology In type 2 diabetes, the body cells cannot use insulin properly. Practice Use the ...

1.58. Autoimmune Diseases http://www.ck12.org 1.58 Autoimmune Diseases Describe autoimmune diseases and allergies. Does pollen ...