Question 1

The clinical microbiology laboratory can provide preliminary identification of microorganisms based on

Accepted Answer

A)  microscopic examination of specimens.
B)  growth or biochemical characteristics.
C)  immunologic techniques that detect microbial antigens.
D)  All of the choices are correct.

Question 2

Fungal infections are often diagnosed by direct microscopic examination of specimens.

Accepted Answer

A) True 
 B)False

Question 3

Determining the susceptibility of a microorganism to specific chemotherapeutic agents is an important service performed in the clinical microbiology laboratory.

Accepted Answer

A) True 
 B)False

Question 4

An ELISA test to detect antibodies to the Rubella virus would include/use all of the following EXCEPT

Accepted Answer

A)  microtiter wells coated with rubella antigen.
B)  enzyme-labeled rabbit antihuman IgG antibodies.
C)  a chromogenic enzyme substrate.
D)  the patient serum specimen.
E)  There are no exceptions here.Each of these items would be used.

Question 5

A patient specimen was Gram-stained upon arrival in the clinical laboratory and revealed both Gram-positive cocci and Gram-negative bacilli.The specimen was cultured on sheep blood agar and chocolate agar,and after incubation,the culture grew only the Gram-negative bacilli.Which of the following is/are a likely explanation(s) for the failure of the Gram-positive cocci to grow?

Accepted Answer

A)  The Gram-negative bacilli may have grown very quickly and overgrew the slower growing Gram-positive cocci.
B)  The media used may not support the growth of the Gram-positive cocci.
C)  The growth temperature may have enabled the growth of the Gram-negative bacilli but not the growth of the Gram-positive cocci.
D)  The Gram-positive cocci may be an obligate anaerobe and was unable to grow in an ambient air incubator.
E)  All of the choices are possible explanations. E

Question 6

Which of the following tests can be used to distinguish Escherichia from Enterobacter?

Accepted Answer

A)  IMVIC
B)  ONPG test
C)  Citrate utilization
D)  Starch hydrolysis

Question 7

Which infectious agent risk group would Mycobacterium tuberculosis be placed in?

Accepted Answer

A)  Risk group 1
B)  Risk group 2
C)  Risk group 3
D)  Risk group 4

Question 8

Which of the following is not a guideline on selection,collection,and handling of clinical specimens?

Accepted Answer

A)  A small quantity of specimen should be obtained.
B)  The specimen selected should be representative of the infectious disease process.
C)  The specimen should be forwarded promptly to the clinical laboratory.
D)  Attention must be given to avoid contamination of the specimen.

Question 9

Which of the following tests is an agglutination test for the bacterium causing typhoid fever?

Accepted Answer

A)  Quellung reaction
B)  API 20E system
C)  Widal test
D)  IMViC C

Question 10

What is the first piece of information that is used in the identification of an unknown bacterial isolate?

Accepted Answer

A)  The ability of the bacterial isolate to ferment glucose
B)  The ability of the bacterial isolate to ferment lactose
C)  The presence of catalase enzyme
D)  The Gram stain morphology

Question 11

Which of the following is/are used to detect chlamydiae in tissues and cell scrapings?

Accepted Answer

A)  PCR methods
B)  Microscopy of Giemsa stained samples
C)  Immunofluorescence
D)  All of the choices are correct.

Question 12

What biosafety level is required when working with Staphylococcus aureus and Streptococcus pyogenes?

Accepted Answer

A)  1
B)  2
C)  3
D)  4

Question 13

Which of the following is routinely used to detect spirochetes in skin lesions in early syphilis?

Accepted Answer

A)  Bright-field microscopy
B)  Phase-contrast microscopy
C)  Dark-field microscopy
D)  DNA fingerprinting C

Question 14

Recommended guidelines for laboratory microbiological precautions should reflect the laboratory's ________ _________.

Accepted Answer

The answer of Recommended guidelines for laboratory microbiological precautions should...

Question 15

The major focus of the clinical microbiologist is to rapidly isolate and identify microorganisms from clinical specimens.

Accepted Answer

A) True 
 B)False

Question 16

All of the following methods are employed to identify pathogens in clinical specimens EXCEPT

Accepted Answer

A)    special stains and microscopy. 
B)    culture on a variety of all-purpose, selective, and/or differential media. 
C)    biochemical tests. 
D)    molecular testing for nucleic acids. 
E)    immunoassays. F)   There are no exceptions here.  All of these methods are used to identify pathogens.

Question 17

DNA probe technology identifies microorganisms by probing their genetic composition.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is not used to culture viruses?

Accepted Answer

A)  Growth on artificial media
B)  Growth in cell cultures
C)  Growth in embryonated hen's eggs
D)  Growth in whole animals

Question 19

The principle of plasmid fingerprinting is that microbial isolates of the same strain contain the same plasmids.

Accepted Answer

A) True 
 B)False

Question 20

________ can also be used to differentiate strains of microorganisms that differ in the antigenic composition of a structure or product.

Accepted Answer

The answer of ________ can also be used to differentiate...

Exam 36: Clinical Microbiology and Immunology

The clinical microbiology laboratory can provide preliminary identification of microorganisms based on

Correct Answer
verified

Fungal infections are often diagnosed by direct microscopic examination of specimens.

Correct Answer
verified

Determining the susceptibility of a microorganism to specific chemotherapeutic agents is an important service performed in the clinical microbiology laboratory.

Correct Answer
verified

An ELISA test to detect antibodies to the Rubella virus would include/use all of the following EXCEPT

Correct Answer
verified

Correct Answer
verified
E

Which of the following tests can be used to distinguish Escherichia from Enterobacter?

Correct Answer
verified

Which infectious agent risk group would Mycobacterium tuberculosis be placed in?

Correct Answer
verified

Which of the following is not a guideline on selection,collection,and handling of clinical specimens?

Correct Answer
verified

Which of the following tests is an agglutination test for the bacterium causing typhoid fever?

Correct Answer
verified
C

What is the first piece of information that is used in the identification of an unknown bacterial isolate?

Correct Answer
verified

Which of the following is/are used to detect chlamydiae in tissues and cell scrapings?

Correct Answer
verified

What biosafety level is required when working with Staphylococcus aureus and Streptococcus pyogenes?

Correct Answer
verified

Which of the following is routinely used to detect spirochetes in skin lesions in early syphilis?

Correct Answer
verified
C

Recommended guidelines for laboratory microbiological precautions should reflect the laboratory's _.

Correct Answer
verified

The major focus of the clinical microbiologist is to rapidly isolate and identify microorganisms from clinical specimens.

Correct Answer
verified

All of the following methods are employed to identify pathogens in clinical specimens EXCEPT

Correct Answer
verified

DNA probe technology identifies microorganisms by probing their genetic composition.

Correct Answer
verified

Which of the following is not used to culture viruses?

Correct Answer
verified

The principle of plasmid fingerprinting is that microbial isolates of the same strain contain the same plasmids.

Correct Answer
verified

________ can also be used to differentiate strains of microorganisms that differ in the antigenic composition of a structure or product.

Correct Answer
verified

Exam 36: Clinical Microbiology and Immunology

The clinical microbiology laboratory can provide preliminary identification of microorganisms based on

Correct AnswerverifiedShow Answer

Fungal infections are often diagnosed by direct microscopic examination of specimens.

Correct AnswerverifiedShow Answer

Determining the susceptibility of a microorganism to specific chemotherapeutic agents is an important service performed in the clinical microbiology laboratory.

Correct AnswerverifiedShow Answer

An ELISA test to detect antibodies to the Rubella virus would include/use all of the following EXCEPT

Correct AnswerverifiedShow Answer

Correct AnswerverifiedE

Which of the following tests can be used to distinguish Escherichia from Enterobacter?

Correct AnswerverifiedShow Answer

Which infectious agent risk group would Mycobacterium tuberculosis be placed in?

Correct AnswerverifiedShow Answer

Which of the following is not a guideline on selection,collection,and handling of clinical specimens?

Correct AnswerverifiedShow Answer

Which of the following tests is an agglutination test for the bacterium causing typhoid fever?

Correct AnswerverifiedC

What is the first piece of information that is used in the identification of an unknown bacterial isolate?

Correct AnswerverifiedShow Answer

Which of the following is/are used to detect chlamydiae in tissues and cell scrapings?

Correct AnswerverifiedShow Answer

What biosafety level is required when working with Staphylococcus aureus and Streptococcus pyogenes?

Correct AnswerverifiedShow Answer

Which of the following is routinely used to detect spirochetes in skin lesions in early syphilis?

Correct AnswerverifiedC

Recommended guidelines for laboratory microbiological precautions should reflect the laboratory's ________ _________.

Correct AnswerverifiedShow Answer

The major focus of the clinical microbiologist is to rapidly isolate and identify microorganisms from clinical specimens.

Correct AnswerverifiedShow Answer

All of the following methods are employed to identify pathogens in clinical specimens EXCEPT

Correct AnswerverifiedShow Answer

DNA probe technology identifies microorganisms by probing their genetic composition.

Correct AnswerverifiedShow Answer

Which of the following is not used to culture viruses?

Correct AnswerverifiedShow Answer

The principle of plasmid fingerprinting is that microbial isolates of the same strain contain the same plasmids.

Correct AnswerverifiedShow Answer

________ can also be used to differentiate strains of microorganisms that differ in the antigenic composition of a structure or product.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
E

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Recommended guidelines for laboratory microbiological precautions should reflect the laboratory's _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified