Chapter 18: Viruses and Prokaryotes

Prions

Timeline and facts about prions and how they cause disease

http://learn.genetics.utah.edu/content/molecules/prions/

(Main Idea: Viruses, bacteria, viroids, and prions can all cause infection.)

Infections

Interactive introduction to viruses and bacteria, the diseases they cause, and how the body fights them, including a game in which you match disease to pathogen

http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/keepinghealthy/defendingagainstinfectionact.shtml

(Main Idea: Viruses, bacteria, viroids, and prions can all cause infection.)

HIV

Animation showing HIV’s structure and how it enters host cells

http://www.learner.org/courses/biology/archive/animations/hires/a_hiv2_h.html

(Main Idea: Viruses differ in shape and ways of entering host cells.)

Bacteriophage

Animation of bacteriophage landing on and infecting a bacterium

http://www.nsf.gov/news/news_videos.jsp?org=NSF&cntn_id=100420&media_id=51295

(Main Idea: Viruses cause two types of infections.)

Viruses

Video describing how the flu virus attacks the body

http://www.npr.org/blogs/krulwich/2011/06/01/114075029/flu-attack-how-a-virus-invades-your-body

(Main Idea: Viruses cause many infectious diseases.)

Infection in Underdeveloped Countries

Video explaining the enormous toll that infectious disease takes on the people of underdeveloped countries

http://www.microbeworld.org/index.php?option=com_content&view=article&id=267

(Main Idea: Viruses cause many infectious diseases.)

Vaccines

Simulation in which you use a virtual laboratory to make vaccines for various pathogens

http://www.pbs.org/wgbh/nova/body/making-vaccines.html

(Main Idea: Vaccines are made from weakened pathogens.)

Bacteria vs. Archaea

Table comparing the characteristics of bacteria, archaea, and eukarya

http://www.learner.org/courses/biology/archive/images/1965_d.html

(Main Idea: Bacteria and archaea are structurally similar but have different molecular characteristics.)

Helpful Bacteria

Slideshow describing various ways in which bacteria are useful

http://www.pbs.org/wgbh/nova/tech/putting-bacteria-to-work.html

(Key Concept: Prokaryotes perform important functions for organisms and ecosystems.)

Antibiotic Resistance

Animated tutorial explaining how bacteria develop resistance to antibiotics

http://outreach.mcb.harvard.edu/animations/resistance7.swf

(Main Ideas: Antibiotics are used to fight bacterial disease. Bacteria can evolve resistance to antibiotics.)

Conjugation

Animation showing how genes for antibiotic resistance can spread from one bacterium to another

http://www.learner.org/courses/biology/archive/animations/hires/a_infect1_h.html

(Main Idea: Bacteria can evolve resistance to antibiotics.)