Foundations of Microbiology Flashcards
Study of microorganisms
Microbiology
True or False: Micro means small; Biology means life
True
About microbial diversity and evolution of microbial cells
Microbiology
Single-celled microscopic organisms
Microorganisms
They are ubiquitous and can live in extreme environments
Microorganisms
What is the system of naming in scientific nomenclature?
Linnaeus System
Discovered by Theodor Escherich
Escherichia coli, or E. coli
The first cell
LUCA
What does LUCA mean?
Last Universal Common Ancestor
They originated from LUCA and are the three domains of life
Bacteria, Archaea, and Eukarya
It is prokaryotic, has peptidoglycan and can be Gram+/-
Bacteria
It is prokaryotic, has cell wall but no PDG, and are extremophiles
Archaea
Eukaryotic with cell wall. Examples of this are: algae, fungi, protozoans, animals and plants
Eukarya
Prokaryotic or Eukaryotic: Algae
Eukaryotic
Prokaryotic or Eukaryotic: Fungi
Eukaryotic
Prokaryotic or Eukaryotic: Bacteria
Prokaryotic
Prokaryotic or Eukaryotic: Archaea
Prokaryotic
Prokaryotic or Eukaryotic: Protozoa
Eukaryotic
Prokaryotic or Eukaryotic: Relatively simple, small cell ranging from 1-2um
Prokaryotic
Prokaryotic or Eukaryotic: Possess rigid cell wall
Prokaryotic
Prokaryotic or Eukaryotic: Organelles are not membrane bound
Prokaryotic
Prokaryotic or Eukaryotic: Genetic material is not enclosed in a nuclear membrane
Prokaryotic
Prokaryotic or Eukaryotic: Genetic material is not enclosed in a nuclear membrane
Prokaryotic
Prokaryotic or Eukaryotic: Complex large cells, ranging form 10-100um
Eukaryotic
Prokaryotic or Eukaryotic: No rigid cell wall in vertebrates but in plants, cell wall is present
Eukaryotic
Prokaryotic or Eukaryotic: Membrane bound organelles
Eukaryotic
Prokaryotic or Eukaryotic: Genetic material is enclosed in a well defined nuclear membrane
Eukaryotic
Prokaryotic or Eukaryotic: Many chromosomes, formed linear, open ended double helical molecule of DNA
Eukaryotic
Takes up the nutrients from the environment and transforms them.
Compartmentalization and metabolism
Chemicals from the environment are turned into new cells from preexisting cells
Growth
Contain genes and evolve to display new biological properties
Evolution
Some cells are capable of self-repulsion
Motility
Some cells can form new cell structures such as a spore, usually as part of cellular life cycle
Differentiation
Many cells communicate or interact by means of chemicals released or taken up
Communication
unicellular, microscopic, prokaryotic, reproduce by binary fission
BACTERIA
unicellular, microscopic, prokaryotic, extremophiles, different to bacteria
ARCHAEA
typically submicroscopic, acellular infectious particles containing either DNA or RNA as a genome that can only replicate inside a living host cell
VIRUS
typically unicellular, microscopic, eukaryotic; reproduce asexually by budding
Yeasts; Fungi
typically filamentous, eukaryotic, asexual reproduction, spores
Molds; Fungi
typically unicellular, microscopic, eukaryotic, lack a cell wall
PROTOZOA
eukaryotic microorganism that carry out photosynthesis
ALGAE
Basic group of microorganism
Bacteria, Archaea, Virus, Fungi, Protozoa, Algae
He published Micrographia in 1664, which contains first microscopic observation of a fungi
Robert Hooke
In 1684, he constructed his own microscope influenced by Hooke and the first to examine microbial content “wee animalcules”
Antoni Van Leeuwenhoek
1876, discovered endospores, founder of the field ‘bacteriology’. Use of cotton for closing flasks and tubes to prevent contamination in media
Ferdinand Cohn
Vaccination of smallpox
Edward Jenner
Mechanism of fermentation, disproved the spontaneous generation, “sterilization process”, rabies and other vaccines, principles of immunization
Louis Pasteur
Methods of preventing infections during surgeries
Joseph Lister
Koch’s postulates, pure culture microbiology, discovery of agents of tuberculosis and cholera
Robert Koch
Chemolithotrophy and chemoautotrophy, nitrogen fixation, sulfur bacteria
Sergei Winogradsky
Enrichment culture technique, discovery of many metabollic groups of bacteria, concept of a virus
Martinus Beijerinck