Microbiology Test Review Ch. 1-3

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What are the THREE domains of classification?

Archaea, Bacteria, Eukarya
What is the function of ribosomes and a distinguishing characteristic of them?

protein synthesis, NOT membrane bound
What is cyanobacteria?

blue/green bacteria that photosynthesize and produce oxygen
What is the unit of measurement that is 1/1000 of a millimeter?

micrometer
What is the function of mitochondria?

energy conservation
What are some characteristics of a Prokaryote?

LACKS membrane, NO true nucleus
What defines a Eukaryote?

Has a membrane and bound organelles
Bacteria has a...

cell wall of peptidoglycan
What is the purpose of a stain when analyzing specimens?

To improve contrast when specimen is transparent
Name THREE types of archaea

Methanogens, thermophiles, & extreme halophiles
Archaea has NO...

NO peptidoglycan
Halophiles exist in...

high osmotic pressure (salty) environments
RNA is central to

LIFE ON EARTH
Which lens do you look through on a microscope?

Ocular lens
What is the numerical aperture?

Amount of light the lens can gather
What are the objective lenses on a microscope?

intensification lenses
What is the condensing lens on a microscope?

condenses light onto specimen/slide
What is the limit of resolution?

minimum distance that two objects can be apart in order to see two objects...to resolve one object from the other
What is the name of the unit of measurement 1/1000 of a micrometer?

nanometer
What is the term for bending light?

refracting
Any distance less than the minimum limit of resolution...

is not possible to see two objects
wavelength of light

520 nanometers
Limit of resolution equation

520/ numerical aperture of objective lens+ numerical aperture of condenser lens
Turbidity

Cloudiness
Lister was an English surgeon that used

carbonic acid/phenol in surgery to prevent wound infections
Koch's postulates

series of steps used to distinguish which bacteria caused disease

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ZoeJane

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Microbiology Test Review Ch. 1-3

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Quiz ONE review

Updated

2013-09-02T19:03:09Z