Intro Flashcards
What are the types of microbes?
1) Normal Flora
2) Opportunistic
3) Pathogenic
What are normal flora microbes?
Bacterica that normally colonize the human body
a) What are opportunistic microbes?
b) Give an example of when they are present?
a) Microbes that take advantage of a situation not normally present.
b) Immune suppresion
What are pathogenic microbes?
Microbes that cause disease and are infectious
What are different types of microbe relationships?
1) Commensalism
2) Mutualism
3) Paratism
What are commensalism relationships?
One organism benefits while other is unaffected.
What are mutualism relationships?
Both organisms benefit
What are paratism relationships?
One organism benefits while other is harmed.
What is the correct nomenclature of microrganisms?
Genus (capitalized) then species (lower case)
- italicized
List the order of modern classification of life (domains).
1) Domain
2) Kingdom
3) Phyllum
4) Class
5) Order
6) Genus
7) Species
What (twho things) dictates the naming of microorganisms?
1) Cell Structure
2) Chemical Composition
What are the four domains of microorganisms?
1) Bacteria
2) Archaea
3) Eukarya
4) Infectious Agents
What are the differences in bacteria and archaea?
Differ in chemical composition
What domain of microorganisms is not living?
Infectious agents
What are bacteria:
- classified as?
- have in their cell walls?
- Prokaryote
- Peptidoglycan
- How do bacteria multiply?
- How do they move?
- By Binary Fission
- Flagella
- What are Archaea classified as?
- What do they have in their cell walls?
- Prokaryote
- No peptidoglycan
- How do Archaea multiply?
- How do most Archaea move?
- Binary Fission
- Flagella
- How are Eukarya classified?
- What makes up their cell walls?
- Eukaryote
- No peptidoglycan
What separates Eukarya from other microorganisms?
a) All have a membrance bound nucleus
b) Can be multicelullar (algae)
c) Have cytoskeletons
What domains of life can infectious agents infect?
All three domains
What are the 4 types of infectious agents and what separates them?
- Viruses
- Nucleic acids surrounded by protein coat
- Bacteriophages
- Infect bacteria
- Viroid
- RNA without protective coat
- Prion
- Protein only
List steps to Koch’s germ theory of disease.
1) Present in every case
2) Pathogen grown in pure culture
3) Cause disease when given to healthy host
4) Reisolated from diseased experimental host
- What are nosocomial infections?
- What type of people does it most infect?
- Infection originating inside healthcare setting.
- Those with compromised immune systems
- What are community infections?
- Who do they most infect?
- Infection acquired outside healthcare setting
- Those with healthy immune systems
