BIO-280 The Microbial World exposes students to the fundamentals of microbiology. It opens with a survey of the microbial world and a discussion of the interactions between microbes and host, then has students evaluate microbial diseases of humans and the environmental and economic impact of microorganisms.
Surveying the microbial world and host interactions
The course begins broadly, surveying the diversity of microorganisms and establishing how microbes interact with host organisms — not all microbial interactions are harmful, and understanding this range is foundational to the rest of the course.
From disease to broader environmental and economic impact
BIO-280 moves from evaluating microbial diseases of humans into the wider environmental and economic impact of microorganisms, recognizing that microbes matter far beyond their role in causing illness.
Key topics in BIO280
- Survey of microbial diversity
- Microbe-host interactions
- Microbial diseases of humans
- Environmental impact of microorganisms
- Economic impact of microorganisms
- Foundational microbiology lab techniques
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Worked example: microbes beyond disease
- Narrow view: Thinking of microorganisms mainly as disease-causing agents
- BIO-280's broader view: Recognizing microorganisms' major roles in environmental processes (decomposition, nutrient cycling) and economic activity (fermentation, biotechnology)
- Lesson: BIO-280 teaches that a complete understanding of microbiology requires looking well beyond disease to the full range of microbial impact
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Frequently asked questions
Not all microbe-host relationships are harmful — many microorganisms are neutral or even beneficial to their hosts, such as gut bacteria that aid digestion — so starting with this fuller picture of microbe-host interaction prevents students from assuming all microbiology is fundamentally about pathogens and disease. BIO-280 structures the course this way because understanding the full range of microbial relationships gives proper context for later, more specifically evaluating which interactions actually cause disease and why.
Microorganisms play essential roles well beyond human health — decomposing organic matter, cycling nutrients through ecosystems, and enabling economically important processes like fermentation and biotechnology — meaning a course that stopped at disease would miss the majority of how microbes actually shape the world. BIO-280 covers this broader impact because it reflects microbiology's genuine scope as a field, not just its most immediately visible connection to human illness.