Microbiology - Ch. 6

What is the deliberate growth of microorganisms in the lab?

a substrate or nutrient medium upon which microbes are cultured in a lab

can be liquid (broth), solid (agar), or semisolid depending upon the procedure & microbe

a macroscopically visible mass of growth of microbes in or on a soild culture medium

represents a population of microbes from 1 living cell

central = older ; periphery = younger

unwanted organism, usually with reference to a pure culture of bacteria or some other microbe

microbial culture grown in culture tubes, petri dishes or other artificial environments

"in glass"

microbes grown on tissue or cell cultures such as chick or duck embryos, monkey kidney tissue, etc

used to cultivate obligate parasites suches as viruses or rickettsias

"in life"

an organism that must be a parasite in order to live

an organism tat lives on dead or decaying organic matter

media that has an exact chemical composition that allows it to be reproduced easily

a complex polysaccharide isolated from algae in the Indian Ocean

it is used in solid and semisolid media to serve as a substrate to grow microbes on

has a melting point of 100C and solidifies at 42C

it is indigestible by microorganisms and nutrients added to it can be extracted by them

medium to which reagents, dyes, etc. have been added to select for or against a certain group of bacteria

various vitamins, mineral and other substances hce veen added to promote the growth of fastidious microorganisms

those with extremely specific nutrient requirements

medium with special formulations to determine if a microbe is utilizing a specific nutrient, produceing a specific product or is sensitive to an antibiotic

any medium that promotes the growth of a wide variety of microorganisms

medium that allows for distinction or differentiation between various bacteria

one which selects for and differentiates between a group of bacteria

an organism that produces its own organic molecules (nutrients) from inorganic starting material

an organism that acquires its organic molecules (nutrients) from substances produced by other organisms

bacteria that use light energy as an energy source and CO2 as a carbon source for metabolism

"photolithotrophic"

bacteria that uses inorganic molecules as a carbon and energy source

bacteria that uses light as an energy source and organic molecules as a carbon source for metabolism

bacteria that uses organic molecules as a carbon and energy source

"chemoorganotrophic"