Historical background & Taxonomy Flashcards
Systematic study of organisms that is too small to be seen by the naked eye
Microbiology
Microbiology involves the study of
- Bacteria
- Viruses
- Parasites
- Fungi
Why do we study microbes?
- To identify causative agent of disease
- Some microbes are beneficial to humans
- Helps MT in identification, isolation, and diagnosis of pathogenic bacteria
Suggested that disease is caused by “invisible living creatures”
Girolamo Fracastoro
Proposed the “Germ Theory”
Girolamo Fracastoro
Father of Protozoology and Bacteriology
Anton van Leeuwenhoek
First person to observe and describe microorganisms and called them as “animalcules”
Anton van Leeuwenhoek
Observed bacteria and protozoa in pond water and own blood and specimens
Anton van Leeuwenhoek
Father of modern Microbiology
Louis Pasteur
Process of treating food with mild heat to eliminate pathogens and extend shelf life
Pasteurization
Disproved Spontaneous Generation
Pasteurization
What theory says that life arises from non-living matter (e.g. fermenting dough)?
Spontaneous Generation by Aristotle
Complex living things come only from other living things, by means of reproduction.
Biogenesis
Rudolph Virchow first proposed Biogenesis
True or False
True
Proponent of Biogenesis
Louis Pasteur
Creation of Attenuated Vaccines
Louis Pasteur
What is Attenuated Vaccines?
Pathogen with drastically reduced virulence but is practically the same live organism
Discovered fermentation
Louis Pasteur
Developed the antiseptic system of surgery
Joseph Lister
Phenol is bacteriostatic at concentration 1-2% and bactericidal and fungicidal at concentration 0.1-1%
True or False
False
Phenol is bacteriostatic at concentration 0.1-1% and
bactericidal and fungicidal at concentration 2-3%
Carbolic acid (phenol) as antiseptic
Antiseptic system of surgery by Joseph Lister
Launched golden age of Medical Bacteriology via Koch’s
Postulates
Robert Koch
Discovery of Bacillus anthracis and Mycobacterium tuberculosis
Robert Koch
Causative agent of Anthrax and Tuberculosis
Bacillus Anthracis and Mycobacterium Tuberculosis
Culture of bacteria using media
Robert Koch
Use of agar and petri dish in cultivating bacteria
Robert Koch
Koch’s Postulates
Evidence required to establish relationship between microorganism and disease:
- Microorganism must be observed in every case of the disease (causative agent)
- It must be isolated and grown in pure culture
- The pure culture, when inoculated in animals, must reproduce the disease.
- Microorganism must be recovered from the diseased animal
Discovered salvarsan to treat syphilis
Paul Ehrlich
Discovered Penicillin
Alexander Fleming
Penicillin was discovered from a bacteria
True or False
False
Penicillin was discovered from mold
An area of science that deals with the study of 3 distinct but interrelated disciplines (classification, nomenclature. identification)
Taxonomy
Greek etymology from the word _____ meaning “arrangement” and _____ meaning law
taxes, nomos
orderly classification and grouping of organisms in taxa meaning “category”
Taxonomy
Taxonomy based on genotypic characteristic, phenotypic characteristics, and phylogenetics.
Polyphasic Taxonomy
Method of classification combines the traditional genotypic, phenotypic, and phylogenetic into a general-purpose classification system
Polyphasic Taxonomy
Evolutionary Relationships
Phylogenetic
What does MALDI-TOF-MS stand for?
Matrix-Assisted Laser Desorption Ionization
Time Of Flight
Mass Spectrometry
Father of Taxonomy
Carolus Linnaeus
Established rules of basic taxonomic classification
Carolus Linnaeus
Discovered Binomial Classification
Carolus Linnaeus
Nomenclature is limited to 2 taxa:
genus and species
How do you write genus name
Capitalized and can be abbreviated
How do you write species name
starts with a lowercase letter
Why are scientific names of organisms are written in italics?
they are usually in Latin
American Ecologist
Robert Whittaker
Basis: Cellular organism and nutritional pattern
Robert Whittaker
What are the 5 Kingdom System
- Monera / Prokaryotae
- Fungi
- Protistae
- Animalia
- Plantae
Discovered the 5 kingdom system
Robert Whittaker
American Microbiologist and Biophysicist
Carl Woese
Basis: Cellular organization and function
Carl Woese
Discovered the Domain System
Carl Woese
What does the domain system comprise of?
- Bacteria
- Eukaria
- Archaea
Hierarchical Classification
- Domain
- Kingdom
- Division or Phylum
- Class
- Order
- Family
- Tribe
- Genus
- Species
- Subspecies
Dear King Philip Come Over For Good Soup
Organism population that is differentiated from populations within species
Strains
Variant prokaryotic strains characterized by biochemical or physiological differences
Biovars
Variation in serological reactions; strains with distinctive antigenic properties
Serovars
The “clan” of a bacteria
Family
The “last name” of a bacteria
Genus
The “first name” of a bacteria
species
Matching Type:
- Names end in -ales
- Name is capitalized and ends in -aceae
- Names end in -eae
A. Family
B. Order
C. Tribe
B, A, C
Family name is capitalized and ends in –aceae
Order name ends in –ales
Tribe Names end in -eae
aka Epithet
Species
In transferring a species from one genus to another, the species is retained.
True or False
True
Three distinct groups of classifying organisms by cell organization
- Prokaryotes
- Eukaryotes
- Archaea
Pathogenic bacteria
Prokaryotes
Larger cells with membrane-encased organelles
Eukaryotes