Intro to Micro
Acellular microbe composed solely of incorrectly folded proteins.
What are prions?
The invention of this instrument led to the first observations of microbes.
What is the light microscope?
See 100 pt slide
What are staphylococci?
A rigid structure located on the outside of the cell composed primarily of peptidoglycan.
What is the cell wall?
A visible "pile" of bacterial cells resulting from the replication of a single bacterial cell.
What is a colony?
Prokaryotic organisms that are similar to bacteria in structure, but possess unusual features, such as the ability to live in harsh environments.
What are archaea?
The practice introduced by Ignaz Semmelweis which drastically reduced childbirth-associated mortalities.
What is hand washing?
See 200 pt slide
What are diplobaccili?
Whip-like structure attached attached to a "motor" which contributes to running and tumbling motility.
What is a flagellum?
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Uni- or multi-cellular eukaryotic microbes that have cell walls composed of chitin; many species are saprophytes.
What are fungi?
The experimental system that establishes a microbe as the causative agent of a disease.
What are Koch's Postulates?
See 300 pt slide
What are streptococci?
An exterior layer of highly organized polysaccharides that protects the cell against desiccation and other conditions.
What is a capsule?
A type of culture that contains two or more easily differentiated microorganisms
What is a mixed culture?
Microbes that metabolize inorganic compounds to survive.
What are chemotrophs?
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See 400 pt slide
What is a tetrad?
Dormant bodies produced by some bacterial species when they experience harsh environmental conditions.
What is an endospore?
Enhances the visibility of bacterial cells through the binding of positively charged chromophores to the cell membrane and the DNA.
What is a positive stain?
A self-replicating, catalytic RNA molecule that likely synthesized the first proteins prior to the evolution of the first prokaryotic cells.
What is a ribozyme?
The field of study focused on understanding how infectious diseases spread through populations; John Snow was a major contributor.
What is epidemiology?
See 500 pt slide
What are palisades?
An extrachromosomal piece of DNA that may be copied and transmitted from one bacterial cell to another.
What is a plasmid?
A culturing technique that can be used to dilute bacteria so that you can grow individual colonies; useful for determining the purity of a culture.
What is streak plate isolation?