General Comments about the Microbial World Supplemental instruction Designed by Pyeongsug Kim ©2010 Picture from

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Presentation transcript:

General Comments about the Microbial World Supplemental instruction Designed by Pyeongsug Kim ©2010 Picture from Fall 2010 For Dr. Wright’s Bio 7/27 Class Updated: August 7, 2010

Designed by Pyeongsug Kim, © Microbes are too small to see… Picture from infection-killing-kids.aspxhttp:// infection-killing-kids.aspx sometimes makes us sick. Some are nasty!

Designed by Pyeongsug Kim, © Some are useful! Some are delicious! Picture from lrcd/learning_areas/bio_science/bio1B/content/001_ecosystems/page_02.htmhttp:// 12lrcd/learning_areas/bio_science/bio1B/content/001_ecosystems/page_02.htm We cannot live without them!

Electron microscopes Development of light microscopes -Important tools for studying microbes. -allowing for observation of microorganisms. -contributed to the study of microbiology. Microscopy -Microscopy : made it possible to visualize microbes and subcellular structures. Designed by Pyeongsug Kim, © Light microscopes

Designed by Pyeongsug Kim, © Pure culture techniques - grow an organism in an isolated laboratory environment. -To identify and study the function of a particular species. Picture from

Designed by Pyeongsug Kim, © Picture from Development of vaccine -Protection from disease by stimulating the immune system with a harmless version of a pathogenic organism. -began with smallpox

Designed by Pyeongsug Kim, © Chemicals that can inhibit the growth of microbes or kill microbes. -Chemotherapeutic agents that are effective in treating to treat microbial infections. -Antibiotics antimicrobial chemicals naturally produced by particular microorganisms. -Penicillin from fungi Picture from

Designed by Pyeongsug Kim, © Picture from bacteria1.htmhttp://en.wikipedia.org/wiki/Plasmidhttp://en.wikipedia.org/wiki/Bacterial_conjugationhttp://science.howstuffworks.com/environmental/green-science/color-coded- bacteria1.htm -DNA molecule that is separate from chromosomal DNA. -transferable genetic elements from one to another organism. Conjugation  Conjugation -Most found in bacteria. -contributed to the ability to produce genetically engineered organisms.

Designed by Pyeongsug Kim, © Nutrient cycling “Life on earth as we know it would not exist without the activity of microbes.” microbes -Chemicals like nitrogen(N), phosphorus(P) and sulfur(S) are chemically modified in the environment by microbes.  all living things need N, P, & S. Picture from