Question 1

The Gram stain is used to differentiate bacteria that have similar morphologic features.The Gram stain method uses different reagents,including:

Accepted Answer

A)  Gram iodine. 
B)  decolorization. 
C)  a counterstain. 
D)  all of the above. 
A)  Gram iodine. 
B)  decolorization. 
C)  a counterstain. 
D)  all of the above.

Question 2

Motile trophozoites found microscopically in fresh urine or fresh genital secretions is diagnostic for which of the following parasites?

Accepted Answer

A)  Plasmodium spp. 
B)  Trichomonas vaginalis 
C)  Enterobius vermicularis 
D)  Pneumocystis jiroveci 
A)  Plasmodium spp. 
B)  Trichomonas vaginalis 
C)  Enterobius vermicularis 
D)  Pneumocystis jiroveci

Question 3

A positive leukocyte esterase and nitrite test (urine rapid-screening test strips)indicates:

Accepted Answer

A)  most likely the patient has a UTI. 
B)  the patient definitely does not have a UTI. 
C)  a new specimen should be collected because these tests indicate contamination. 
D)  the test strips are not reacting properly, and the quality control should be rechecked. 
A)  most likely the patient has a UTI. 
B)  the patient definitely does not have a UTI. 
C)  a new specimen should be collected because these tests indicate contamination. 
D)  the test strips are not reacting properly, and the quality control should be rechecked.

Question 4

What is the biosafety level of most clinical microbiology laboratories?

Accepted Answer

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

Question 5

Growth of several colonies originating from a single colony,and thus a single cell,is known as a:

Accepted Answer

A)  subculture. 
B)  primary culture. 
C)  mixed culture. 
D)  pure culture. 
A)  subculture. 
B)  primary culture. 
C)  mixed culture. 
D)  pure culture.

Question 6

If a microbiologist wants to add a selective and enriched medium for the recovery of Neisseria gonorrhoeae from genital specimens,which of the following would be appropriate?

Accepted Answer

A)  Chocolate agar (CHO
C)  
B)  Sheep blood agar (SBA or B
A)  
C)  Modified Thayer-Martin agar (MTM) 
D)  Phenylethyl alcohol agar (PE
A)  
A)  Chocolate agar (CHO
C)  
B)  Sheep blood agar (SBA or B
A)  
C)  Modified Thayer-Martin agar (MTM) 
D)  Phenylethyl alcohol agar (PE
A)

Question 7

Which of the following are the nematodes?

Accepted Answer

A)  Roundworms 
B)  Flatworms 
C)  Tapeworms 
D)  Flukes 
A)  Roundworms 
B)  Flatworms 
C)  Tapeworms 
D)  Flukes

Question 8

Interpret the following case study:
A 25-year-old woman presents to the emergency department with vaginal discomfort.The physician ordered a hanging drop (wet preparation for Trichomonas vaginalis),KOH preparation,Gram stain,culture,and Gen-Probe.The results are:
Hanging drop: no motile trichomonas seen,clue cells present
KOH preparation: no fungal elements seen
Gram stain:
Many gram-variable bacilli
Few squamous epithelia
Rare amount gram-positive bacilli
Genital culture: pending
Gen-Probe: negative for Neisseria gonorrhoeae and negative for Chlamydia trachomatis

Accepted Answer

Gardnerella vaginalis causing bacterial

Question 9

A fungal infection that affects the deeper layers of the skin,including muscle and connective tissue,is called ____ mycosis.

Accepted Answer

A)  superficial 
B)  cutaneous 
C)  subcutaneous 
D)  systemic 
A)  superficial 
B)  cutaneous 
C)  subcutaneous 
D)  systemic

Question 10

Which of the following is done to identify Streptococcus pneumoniae?

Accepted Answer

A)  Ethylhydrocupreine hydrochloride 
B)  Optochin 
C)  Bile solubility 
D)  Desoxycholate 
A)  Ethylhydrocupreine hydrochloride 
B)  Optochin 
C)  Bile solubility 
D)  Desoxycholate

Question 11

The prefix strepto- refers to bacteria in which of the following groupings?

Accepted Answer

A)  Clusters 
B)  Pairs 
C)  Chains 
D)  Singular 
A)  Clusters 
B)  Pairs 
C)  Chains 
D)  Singular

Question 12

A clean-catch midstream urine specimen is sent to the laboratory for culture.The results of the culture yield three organisms present,with no predominating organism.What type of workup should the technologist do?

Accepted Answer

A)  Complete workup of all organisms present 
B)  No workup because of possible contamination 
C)  Workup one of the organisms 
D)  Workup two of the organisms 
A)  Complete workup of all organisms present 
B)  No workup because of possible contamination 
C)  Workup one of the organisms 
D)  Workup two of the organisms

Question 13

A growth of bacteria that began as one parent bacterium and divided multiple times to become a visible aggregate is called a:

Accepted Answer

A)  culture. 
B)  pure culture. 
C)  slant culture. 
D)  colony. 
A)  culture. 
B)  pure culture. 
C)  slant culture. 
D)  colony.

Question 14

Which of the following refers to colony morphology?

Accepted Answer

A)  Cocci in chains 
B)  Shiny, wet, or mucoid 
C)  Yellow, dry, rough 
D)  Both b and c 
A)  Cocci in chains 
B)  Shiny, wet, or mucoid 
C)  Yellow, dry, rough 
D)  Both b and c

Question 15

Automated methods of culturing blood have replaced traditional methods in most laboratories because of:

Accepted Answer

A)  more rapid detection time for many pathogens. 
B)  monitoring of growth without visual inspection or subculture of the bottles. 
C)  the ability to use the report in conjunction with a computerized laboratory management information system. 
D)  all of the above. 
A)  more rapid detection time for many pathogens. 
B)  monitoring of growth without visual inspection or subculture of the bottles. 
C)  the ability to use the report in conjunction with a computerized laboratory management information system. 
D)  all of the above.

Question 16

Which of the following specimens is appropriate for detection of Plasmodium spp.?

Accepted Answer

A)  Stool 
B)  Wound 
C)  Blood 
D)  Urine 
A)  Stool 
B)  Wound 
C)  Blood 
D)  Urine

Question 17

Routine microbiology laboratories have incubators that are set at all of the following temperatures except:

Accepted Answer

A)  30° C. 
B)  35° C. 
C)  42° C. 
D)  50° C. 
A)  30° C. 
B)  35° C. 
C)  42° C. 
D)  50° C.

Question 18

Which of the following is an organism that can grow in the presence or absence of oxygen?

Accepted Answer

A)  Aerobe 
B)  Anaerobe 
C)  Facultative anaerobe 
D)  Microaerophile 
A)  Aerobe 
B)  Anaerobe 
C)  Facultative anaerobe 
D)  Microaerophile

Question 19

Which of the following is one cause of bacterial vaginosis and is best diagnosed by the presence of microscopic "clue cells"?

Accepted Answer

A)  Gardnerella vaginalis 
B)  Neisseria gonorrhoeae 
C)  Chlamydia trachomatis 
D)  Trichomonas vaginalis 
A)  Gardnerella vaginalis 
B)  Neisseria gonorrhoeae 
C)  Chlamydia trachomatis 
D)  Trichomonas vaginalis

Question 20

All of the following are structures found in prokaryotic organisms except:

Accepted Answer

A)  mitochondria. 
B)  capsules. 
C)  ribosomes. 
D)  cell wall. 
A)  mitochondria. 
B)  capsules. 
C)  ribosomes. 
D)  cell wall.

The Gram stain is used to differentiate bacteria that have similar morphologic features.The Gram stain method uses different reagents,including:

Motile trophozoites found microscopically in fresh urine or fresh genital secretions is diagnostic for which of the following parasites?

A positive leukocyte esterase and nitrite test (urine rapid-screening test strips)indicates:

What is the biosafety level of most clinical microbiology laboratories?

Growth of several colonies originating from a single colony,and thus a single cell,is known as a:

If a microbiologist wants to add a selective and enriched medium for the recovery of Neisseria gonorrhoeae from genital specimens,which of the following would be appropriate?

Which of the following are the nematodes?

A fungal infection that affects the deeper layers of the skin,including muscle and connective tissue,is called ____ mycosis.

Which of the following is done to identify Streptococcus pneumoniae?

The prefix strepto- refers to bacteria in which of the following groupings?

A clean-catch midstream urine specimen is sent to the laboratory for culture.The results of the culture yield three organisms present,with no predominating organism.What type of workup should the technologist do?

A growth of bacteria that began as one parent bacterium and divided multiple times to become a visible aggregate is called a:

Which of the following refers to colony morphology?

Automated methods of culturing blood have replaced traditional methods in most laboratories because of:

Which of the following specimens is appropriate for detection of Plasmodium spp.?

Routine microbiology laboratories have incubators that are set at all of the following temperatures except:

Which of the following is an organism that can grow in the presence or absence of oxygen?

Which of the following is one cause of bacterial vaginosis and is best diagnosed by the presence of microscopic "clue cells"?

All of the following are structures found in prokaryotic organisms except:

Fundamentals of the Clinical Laboratory

Safety in the Clinical Laboratory

Quality Assessment and Quality Control in the Clinical Laboratory

Phlebotomy: Collecting and Processing Blood

The Microscope

Systems of Measurement, laboratory Equipment, and Reagents

Laboratory Mathematics and Solution Preparation

Basic and New Techniques in the Clinical Laboratory

Delivery of Laboratory Testing From Point of Care to Total Automation

Introduction to Clinical Chemistry

Principles and Practice of Clinical Hematology

Introduction to Hemostasis

Renal Physiology and Urinalysis

Examination of Body Fluids and Miscellaneous Specimens

Immunology and Serology

Immunohematology and Transfusion Medicine

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Exam 15: Introduction to Microbiology

The Gram stain is used to differentiate bacteria that have similar morphologic features.The Gram stain method uses different reagents,including:

Motile trophozoites found microscopically in fresh urine or fresh genital secretions is diagnostic for which of the following parasites?

A positive leukocyte esterase and nitrite test (urine rapid-screening test strips)indicates:

What is the biosafety level of most clinical microbiology laboratories?

Growth of several colonies originating from a single colony,and thus a single cell,is known as a:

If a microbiologist wants to add a selective and enriched medium for the recovery of Neisseria gonorrhoeae from genital specimens,which of the following would be appropriate?

Which of the following are the nematodes?

A fungal infection that affects the deeper layers of the skin,including muscle and connective tissue,is called ____ mycosis.

Which of the following is done to identify Streptococcus pneumoniae?

The prefix strepto- refers to bacteria in which of the following groupings?

A clean-catch midstream urine specimen is sent to the laboratory for culture.The results of the culture yield three organisms present,with no predominating organism.What type of workup should the technologist do?

A growth of bacteria that began as one parent bacterium and divided multiple times to become a visible aggregate is called a:

Which of the following refers to colony morphology?

Automated methods of culturing blood have replaced traditional methods in most laboratories because of:

Which of the following specimens is appropriate for detection of Plasmodium spp.?

Routine microbiology laboratories have incubators that are set at all of the following temperatures except:

Which of the following is an organism that can grow in the presence or absence of oxygen?

Which of the following is one cause of bacterial vaginosis and is best diagnosed by the presence of microscopic "clue cells"?

All of the following are structures found in prokaryotic organisms except:

Fundamentals of the Clinical Laboratory

Safety in the Clinical Laboratory

Quality Assessment and Quality Control in the Clinical Laboratory

Phlebotomy: Collecting and Processing Blood

The Microscope

Systems of Measurement, laboratory Equipment, and Reagents

Laboratory Mathematics and Solution Preparation

Basic and New Techniques in the Clinical Laboratory

Delivery of Laboratory Testing From Point of Care to Total Automation

Introduction to Clinical Chemistry

Principles and Practice of Clinical Hematology

Introduction to Hemostasis

Renal Physiology and Urinalysis

Examination of Body Fluids and Miscellaneous Specimens

Immunology and Serology

Immunohematology and Transfusion Medicine

Filters