Micro Vocab Chap 6

a culture medium containing ingredients that will remove dissolved oxygen from the medium to allow the growth of anaerobes

a culture medium designed to supress the growth of unwanted microorganisms and encourage the growth of desired ones

a solid culture medium that makes it easier to distinguish colonies of the desired organism

a culture medium used for preliminary isolation that favors the growth of a particular microorgansim

a method for determining the number of bacteria in a samlke by counting the number of colony forming units on solid culture medium

visible bacteria colonies on a solid culture media

enumeration of cells by observation through a mcroscope

the cloudiness of a suspension

an indirect way to estimate bacterial numbers by measuring the amount of metabolic byproduct(s) produced

an organism that grows between 10-50 degrees C; a moderate-temperature-loving microbe

an organism whose optimum growth temperature is between 50-60 degrees C; a heat loving microbe

anorganism that grows best at 5 degress C and does not grow above 20 degrees C. A cold loving microbe

the lowest temperature at which a species will grow

the temperature at which a species grows best

the highest temperature at which a species can grow

a bacterium that grows below pH 4

an organism that requires a high salt concentration for growth

an organism that requires molecular oxygen to live

an organism that can grow with or without molecular oxygen

an organism that does not use molecular oxygen and is killed in the presence of moleuler oxygen

an organism that grows best in an environment with less molecular oxygen than is normally found in air

a microbial community that usually forms as a slimy layer on a surface

a bacterium that grows at a pH of 7

a bacterium that grows at a pH of 9 or greater