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Post date: May 26, 2015 5:23:04 PM
Lots of people think, well, we’re humans; we’re the most intelligent and accomplished species; we’re in charge. Bacteria may have a different outlook: more bacteria live and work in one linear centimeter of your lower colon than all the humans who have ever lived. That’s what’s going on in your digestive tract right now. Are we in charge, or are we simply hosts for bacteria? It all depends on your outlook."
Activities
https://docs.google.com/presentation/d/1C26zOwZuaz66b6FQ_ReY47Svyp-big1bDlWPxJPf_r0/edit?usp=sharing
1. Define horizontal gene transfer and explain how it applies (complicates) to phylogenetic trees using two of the following concepts as evidence...
a. prokaryotes via transformation (uptake of naked DNA)
b. transduction (viral transmission of genetic information)
c. conjugation (cell-to-cell transfer)
d. transposition (movement of DNA segments within and between DNA molecules) increase variation.
2. Describe humans impact on genetic variation in other species using two of the following as examples...
a. Artificial selection
b. Loss of genetic diversity within a crop species
c. Overuse of antibiotics
3. Explain the diversity of nutritional modes in prokaryotes by distinguishing between...
a. Autotrophs from Heterotrophs (include in your answer Carbon source, phototrophic, and chemotrophic)
b. Metabolism of oxygen vs. Nitrogen
(include in your answer aerobic, anaerobic, and fixation)
c. Metabolic cooperation
Chapter 26 Lecture
https://drive.google.com/file/d/0Bxrp0pXnp-KeQ1d3NnZHVFJkMms/view?usp=sharing
Chapter 26 Test Bank
https://docs.google.com/document/d/16tjc23dn4QcrFAbXeawQkbP9OYPegCncGXCrjo_KMrU/edit
Chapter 27 Lecture
https://drive.google.com/file/d/0Bxrp0pXnp-KeZ3VTRmNWeHhTRGs/view?usp=sharing
Chapter 27 Test Bank
https://docs.google.com/document/d/163_QpwqYoXosJAs_3Oo_gBhUYKiJDkp6IErFQ9zoHQI/edit
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