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Printable Handouts
Navigable Slide Index
- Introduction
- World of microbes roadmap
- What is a microbe?
- Microbiology
- My perspective
- Why microbiology?
- History of microbiology
- Pre-germ theory of disease
- Golden age of microbiology
- Modern era of microbiology
- Staining techniques
- Microscopes
- Incredible diversity but many look alike
- Basic shapes
- Some variations
- Cell arrangements
- Cell sizes
- How to tell microbes apart
- Most people think of microbes and disease (1)
- Most people think of microbes and disease (2)
- Two greatest challenges facing microbiology
- Most people overlook microbes and health
- Microbes live where we find liquid water
- Critical role in element cycling
- Critical role in cleaning up the environment
- Critical role in fouling the environment
- Microbes and food
- Synthetic biology (1)
- Bactograph!
- Synthetic biology (2)
- Thank you!
Topics Covered
- The high diversity and pervasiveness of microbes
- History of microbiology
- Observing microbes and the advancement of microscopy
- Describing and distinguishing microbes
- Microbes in health and disease
- Microbes, evolution, and the environment
- Putting microbes to work: microbes and food & synthetic biology
Talk Citation
Westenberg, D. (2019, December 31). An introduction to the world of microbes [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved December 5, 2024, from https://doi.org/10.69645/FYAE4584.Export Citation (RIS)
Publication History
Financial Disclosures
- There are no commercial/financial matters to disclose.
A selection of talks on Microbiology
Transcript
Please wait while the transcript is being prepared...
0:00
Hello. My name is Dave Westenberg.
I'm an Associate Professor of
Biological Sciences at Missouri University of Science and Technology.
I'm here to give you an introduction to the world of microbes.
0:13
So, here's a little road map of where I'm going to take you today.
First of all, we will go through a little bit about what is a microbe
and tell you a little about the history of microbiology as a scientific discipline,
but also maybe a little bit of pre-history.
We'll talk about how we see microbes,
because that's certainly a big part of how
microbes were discovered and how we work with them.
I'll, then, take you a little bit through how we described microbes,
the different ways that we can define them and tell us what they are.
Then, I'll talk a little bit about their importance,
how they impact our health,
and how they impact our earth through our environment.
Then, I'll talk a little bit about how we use microorganisms today,
now that we've had the power to capture what they can do.
0:52
So, what is a microbe?
To kick things off here,
I'll tell you a little bit about what I'm talking about here.
Microbes are organisms for which you need a microscope to see.
So, that may make sense now when you think about that name and the word microscope.
The kinds of organisms that we're talking about here are bacteria,
archaea, fungi, protists, and viruses.
So, we're going to take you a little bit through the world of these microscopic organisms.
1:20
When we talk about the discipline of microbiology,
we can break that down into
several sub-disciplines based on the kinds of organisms that you're studying.
A bacteriologist, which is my background,
study bacteria and the archaea-
what we call the prokaryotic organisms.
Although, that term 'prokaryote' is kind of starting to take on a bit of
a concern with people because it has a negative perception.
But, I still stick with the term prokaryote when I talk about bacteria and archaea.
But, we also have virologists.
They study viruses.
We have cell biologists that consider themselves
microbiologists who study cell structure and function.
In a lot of cases, cell biologists tend to study microscopic organisms we call the yeast.
Mycology is the study of fungi,
so yeast would fall into that category as well.
But, mostly, when we think about mycology,
we think about those fuzzy things growing on your bathroom curtains,
the nice little microbes that grow on your bread and things like that.
We also have parasitology,
those parasites that cause very serious diseases,
things like protists and worms that live in us-
things like malaria might be a very well known parasitic disease.
Then, of course, immunology is a very big part of microbiology.
You'll find a lot of microbiology departments around
the world are called microbiology and immunology
because how we respond to microbes is through our immune system,
and so, immunology is a big part of studying microbiology,
particularly where it talks about human health.
Of course, what we're learning nowadays,
as we understand the microbes around us is that
many of us think of that as a negative interaction.
But, we're actually finding a homeport in that microbes are in
helping develop the immune system and how our bodies develop.
So, it's really an exciting time to be in microbiology and see how
all of these realms of microbiology are developing over the years.