4. Marshmallow Pox Flashcards
What is a selective growth medium?
Growth medium containing 1/more components that inhibit or disallow the growth of some types of bacteria, while allowing others to survive
What is a differential growth medium?
Growth medium that allows differentiation of microorganisms, often based on their metabolic capabilities
What is a complex growth medium?
Growth medium in which the exact chemical composition of 1/more of its constituents has not been established
What is a defined growth medium?
Growth medium where all the constituents + the relative amts. in which they’re present are known
What is Mannitol Salt Agar?
Selective + differential growth medium to detect halotolerant mannitol fermenting bacteria
What is MacConkey agar?
Selective + differential growth medium to detect lactose fermenting Gram-negative enteric bacteria
What is phenyl-ethyl alcohol agar?
Selective growth medium that inhibits Gram-negative bacteria
What is bacillus anthracis?
Bacterium that is the causative agent of anthrax
What is the white death?
Tuberculosis
What is the black death?
Bubonic plague
What are Koch’s Postulates? Can you list them?
A set of guidelines to demonstrate that a specific pathogen causes specific symptoms
1) It must be found in all cases of the disease
2) It must be isolated from host + grown in pure culture
3) It must reproduce the original disease when introduced into a susceptible host
4) It must be found present in the experimental host + identified as identical to original causative agent
What are cultural characteristics?
When grown on a variety of media, microorganisms will exhibit the difference in the microscopic appearance of their broth.
These differences are called cultural characteristics, and are used as a basis for separating microorganisms into taxonomic groups.
What is a Gram stain?
Differential stain that distinguishes cells w/ a gram-positive cell from those w/ a gram-negative wall
What is an endospore stain?
Differential stain that enables visualization of endospores and differentiation of spores from vegetative cells. Detects endospore-forming members of the genera Bacillus and Clostridium.
