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Quiz Questions


the study of the immune response to infection caused by microorganisms

all microorganisms are best defined as organisms that

are too small to be seen with the unaided eye


disease causing microorganisms

If you inoculate staph and e-coli but only one grows in the culture what happened

it is a selective culture

pure culture

contains only one species of microorganism

agar is a complex polysaccharide that comes from


For which bacterial genus is mannitol salt agar selective


Newly inoculated cultures must be________ at a specific temperature and time to encourage growth


The Five I's are

Inoculate, Incubate, Isolate, Inspection, Identify

The purpose of staining cells on a microscope slide is to

Add contrast in order to see them

The type of microscope in which you would see brightly illuminated specimens against a black backgound is


What type of isolation technique is most effective for the majority of applications

streak plate

Which of the following magnifies the specimen to produce the real image of the specimen

objective lens

Which type of medium is able to distinguish different types of microorganisms based on an observable change in the colonies or in the medium


three physical forms of laboratory media are

solid, semisolid, and liquid

a prokaryotic cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is

gram positive

bacteria in the genus Mycoplasma and bacteria called L-forms lack cell walls


Both gram positive and gram negative cells have outer membranes


chemotaxis refers to the ability to

move in response to a chemical

spirochetes have a twisting and flexing locomotion due to appendages called

periplasmic flagella (axial filaments)

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