Introduction
Microbiology is the study of what?
Microbiology is the study of organisms that are too small to see with the unaided eye.
Who was the first person credited with accurately observing and describing microorganisms?
Antony Van Leeuwenhoek
As the resolution of a microscope gets better, does the numerical aperture increase or decrease?
increase
What are the three domains for the classification of an organism and what is a unique characteristic about each domain?
Bacteria
Unique Characteristic: cell walls contain peptidoglycan
Archaea
Unique Characteristic: have unique membrane lipids
Eukarya
Unique Characteristic: have a complex membrane-bound organelle structure
Who performed the final experiment to discredit spontaneous generation using swan neck flasks?
Louis Pasteur
What is the main problem of staining organisms for viewing under a microscope?
it often kills the organism
What is a virus composed of?
Protein and nucleic acid
Who discovered that heat-resistant bacteria could produce endospores?
Ferdinand Cohn
What microscope is most often used for studying microbial motility, determining the shape of living cells, and detecting bacterial structures such as endospores and inclusion bodies?
Phase-contrast
What is the distinguishing factor of Domain Archaea when compared to Domain Bacteria?
Unique ribosomal RNA sequences
True or false? A set of postulates used to determine a link between a particular microorganism and a particular disease were named after Louis Pasteur.
False. They were named after Robert Koch.
What type of microscopy stains specimens with fluorochrome?
fluoresence microscopy
What Eukaryotic organism is considered the "hunters and gatherers" of the microbial world?
protozoa
Is the postulate below the 1st, 2nd, 3rd, or 4th postulate of Koch's postulates?
"The same disease must result when the isolated microorganism is inoculated into a healthy host."
Why does electron microscopy have better resolution?
because the wavelength of a beam of electrons is very short