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"Unseen Life on Earth"

Peer into the microbial world with this comprehensive microbiology series. This series helps students understand microbial functions and how microorganisms affect everything from medicine to environmental issues to global politics. Dynamic visuals — such as animations and scanning electron micrographs — and case studies including DNA testing and dramatic battles against dangerous viruses illustrate the work and effects of microorganisms. Students gain an enhanced appreciation of the field of microbiology as they meet scientists carrying on their investigations in the lab and in the field.

There are 11 videos in this category and 0 videos in 0 subcategories.

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Not Right For WatchKnowLearn
Ages: 12 - 18
989 Views:
Genetic Transfer
From learner.org, produced by Oregon Public Broadcasting
Microbial populations achieve genetic diversity through horizontal gene transfer. Bacteria may transfer genes from one to another by conjugation, transformation, or transduction. Scientists often exploit these processes through recombinant DNA.
March 22, 2010 at 08:09 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1122 Views:
Microbial Ecology
From learner.org, produced by Oregon Public Broadcasting
Humans and all life forms depend on microorganisms as the essential processors of oxygen, mineral nutrients for plant growth, and waste materials. Here we investigate some of the important environments dominated by microbes and how their presence is ... [more]
March 22, 2010 at 08:13 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1368 Views:
The Unity of Living Systems
From learner.org, produced by Oregon Public Broadcasting
All cellular organisms — prokaryotic and eukaryotic — share basic chemical similarities. Out of these similarities, however, emerge diverse patterns of cell assembly. Students encounter the tools to understand various cell types and their relationshi... [more]
March 22, 2010 at 08:04 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1198 Views:
Microbes and Human Diseases
From learner.org, produced by Oregon Public Broadcasting
How microbes come into contact with humans, and the many factors leading to disease outbreaks around the globe, are examined here. Students learn about current efforts to track infectious diseases and the considerations necessary to control disease w... [more]
March 22, 2010 at 08:19 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1108 Views:
The Microbial Universe
From learner.org, produced by Oregon Public Broadcasting
The world of microorganisms is a dynamic one, and all other life forms depend on microbial metabolic activity. Recent genetic research has uncovered only about one percent of the microbes that remain to be discovered.
March 22, 2010 at 08:01 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
996 Views:
Microbial Control
From learner.org, produced by Oregon Public Broadcasting
In certain situations, microbial control is a necessity. For instance, our food system requires sanitary conditions and hospitals require sterilization techniques. Here we see the options available for various levels of microbial control.
March 22, 2010 at 08:15 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
938 Views:
Reading the Code of Life
From learner.org, produced by Oregon Public Broadcasting
DNA is central to cell activity, replicating with great fidelity and carrying the information for all proteins. Organisms also regulate the products made from genes in an effort to conserve energy and adapt to new environments.
March 22, 2010 at 08:07 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
934 Views:
Microbial Evolution
From learner.org, produced by Oregon Public Broadcasting
Recent genetic techniques have led to new theories of evolution and the relationships between organisms. Students examine this "evolution revolution," using molecular sequences to trace the phylogenetic relationships of microbial life. Both the big p... [more]
March 22, 2010 at 08:10 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
909 Views:
Microbial Interactions
From learner.org, produced by Oregon Public Broadcasting
There are many symbiotic relationships among microbes and between microbes and higher organisms. Microorganisms have developed mechanisms to defeat animals' defenses against disease. Examples of beneficial and harmful symbiotic relationships are exam... [more]
March 22, 2010 at 08:16 PM
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Not Right For WatchKnowLearn
Ages: 12 - 18
907 Views:
Human Defenses
From learner.org, produced by Oregon Public Broadcasting
Both nonspecific and specific defense strategies can defeat the invasion of microbial pathogens. Students learn about the coordinated defense system of humans through visual analogy, animation, and examples of specific diseases.
March 22, 2010 at 08:18 PM
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