Exam 7: Traditional Cultivation and Identification

Characteristic colonial morphology should include all of the following except:

To read the hemolytic reaction accurately on a blood agar plate,the technologist must:

Escherichia coli,a member of the family Enterobacteriaceae,was resistant to the antibiotic vancomycin.Which of the following statements explains this discrepancy?

Which medium can be described as suppressing the growth of most gram-negative organisms while allowing gram-positive bacteria to grow?

Organisms that have nutritional needs that are relatively complex and require extra media components to be used for growth are called:

Which category of media can be described as containing nutrients that support the growth of the most nonfastidious organisms without giving any particular organism a growth advantage?

Clinical sensitivity in the microbiology laboratory refers to:

Media function testing should include all of the following except:

The limit of detection in the microbiology laboratory is termed:

Generation time can be defined as the:

Oxidative or fermentative media were set up on an organism suspected of being P.aeruginosa.What results would be expected?

Which category of media can be described as containing one or more agents that are inhibitory to all organisms except those being sought?

A positive pyrrolidonyl arylamidase (PYR)test was observed on a species of Enterococcus.What color should be observed for this reaction?

Which of the following organisms grows best at 42°C?

A bacterial colony can be described as:

Which group of bacteria uses oxygen as a terminal electron acceptor and grows well in ambient air?

Which medium can be described as containing bile salts and dyes (e.g. ,bromothymol blue and acid fuchsin)to slow selectively the growth of most nonpathogenic gram-negative bacilli found in the gastrointestinal tract and allow Salmonella spp.and Shigella spp.to grow?

Colonies that appear white and shinny are also considered:

Media prepared in the laboratory should be tested for quality using all of the following except:

Which medium can be described as containing crystal violet dye to inhibit the growth of gram-positive bacteria and fungi and allows many types of gram-negative bacilli to grow?