Each person's gut carries a different collection of bacteria-infecting viruses that may benefit their hosts, researchers report. The viruses contain DNA fragments whose functions include cell repair and food processing.
This activity utilizes the emergence of antibiotic resistance, and mechanisms thereof, to teach essential concepts including natural selection, bacterial gene transfer, mutation, and gene expression. It also provides a connection between course content and modern applications of important concepts. The activity (app. 25 minutes) is intended for introductory students in biology. It is flexible and...
In this activity, students are exposed to some of the most significant biomolecules currently exploited by technology and identify their natural origins. They also explain the significance of the roles these biomolecules play in nature, as well as for humans. Specifically, students work to develop a logical process for a real-life application of biotechnology (insulin production) using knowledge...
Two lecturebtype videos introduce pathogenic Bacteria and Helicobacter pylori. The first video gives a lecture about how human beings protect themselves from bacteria incursion: (1) phase 1, non-induced innate immunity, (2)phase 2, induced innate immunity, (3)phase 3, induced adpative immunity. The second video introduces how H. pylori causes the diseases in human stomach, introducing Cag A.
This NSF press release describes the discovery of the chlorophyll-producing bacterium, Candidatus chloracidobacterium (Cab.) thermophilum. An article by Don Bryant and David M. Ward in the July 27, 2007 issue of Science describes the discovery. This press release describes the bacteria as well as the use of metagenomics.
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