Lecture 1 Flashcards
Microorganisms
organisms too small to be seen without the unaided eye
Microorganisms
Rapidly growing cell, specifically pathogenic
Germs
Two things knowledge of microbes helps humans with
Prevent food spoilage. Prevent disease occurrence
Beneficial actions of microbes
Decompose organic waste, production of fermented foods (wine, cheese, bread), generate organic molecules and O2 by photosynthesis
How do microbes generate organic molecules and O2
Photosynthesis
Destructive actions of microbes include
Spoilage of food, disease causing, can be toxic
Who established the system of scientific nomenclature including rational naming of all organisms and binary nomenclature
Linnaeus
How many names does each organism have?
2
What are the 2 names of each organism
the genus and specific epihet
What type of species are humans
homo sapiens
Who discovered E. coli
Theodor Escherich
No cell or nucleus
Prokaryotes
Bacteria and Archaea are examples of
Prokaryotes
Defined nucleus
Eukaryotes
Fungi is an example of
eukaryotes
protozoa and algae are examples of
eukaryotes
Non cellular infective entities
viruses
Prokaryotes with a different cell wall and unique rRNA signatures that are frequent in extreme environments
Archaea
Unicellular prokaryotes, peptidoglycan cell walls
Bacteria
How is bacteria reproduced?
Binary fission
Mostly immobile, multicellular with diverse cell types, use organic chemicals for energy
Fungi
May be motile via pseudopods, cilia, or flagella. Unicellular eukaryotes, absorb or ingest organic chemicals
protozoa
Algae are what kind of organisms? Prokaryotes or eukaryotes?
eukaryotes
What is a eukaryote that uses photosynthesis for energy with cellulose cell walls and produce molecular oxygen and organic compounds? Aquatic habitats
Algae
What kind of organisms are multicellular animal parasites
Eukaryotes
Non living microbes that are acellular, consist of DNA or RNA core of hereditary material
Virus
Can replicate only when they are in a living host
Viruses
Core is surrounded by a protein coat
Viruses
What year were first microbes observed
1673
This person reported that living things were composed of little boxes or cells
Robert Hooke
Said cells arise from preexisting cells
Rudolf Virchow
All living things are composed of cells, structural and functional units, and come from preexisting cells
Cell theory
What years were the golden age of microbiology
1857-1914
Whose work started the Golden Age of Micro?
Louis Pasteur’s work
This persons discoveries included the relationship between microbes and disease, immunity, and antimicrobial drugs
Louis Pasteur
Showed that microbes are responsible for fermentation in wine and beer
Pasteur
Advocated hand washing to prevent transmission of puerperal fever from on OB patient to another
Ignaz Semmelweis
Used chemical disinfectant to infections wound during surgery
Lister
proved that a bacterium causes anthrax and provided experimental steps
Robert Koch
prove that specific microbes cause specific disease
Koch
Protection by vaccination is called
immunity
vaccination derives from the word vacca which means
cow
Treatment with chemicals is called
chemotherapy
Used to treat infectious disease and can be synthetic drugs or antibiotics (natural products)
Chemotherapeutic agents
This person speculated about a “magic bullet”
Paul Ehrlich
This would be able to destroy a pathogen without harming the host
magic buller
invented a drug to treat syphilis (salvarsan)
Paul Ehrlich
Who discovered the first antibiotic ?
Alexander Fleming
What was the name of the first antibiotic ?
Penicillin
Study of how microbes inherit traits
Microbial genetics
Study of how genetic information is transmitted
Molecular biology
Generates DNA artificially made combining two or more different sources
Recombinant DNA technology