Question 1

The Six I's of studying microorganisms include all of the following except

Accepted Answer

A)  inoculation.
B)  incubation.
C)  infection.
D)  isolation.
E)  identification.F) A) and D)
G) A) and C)

Question 2

Compare and contrast the reagents and functions of negative staining versus positive staining.

Accepted Answer

Negative staining and positive staining ...

Question 3

A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?

Accepted Answer

A)   The microbiologist used too much inoculum.
B)   The culture is contaminated.
C)   The incubation temperature was incorrect.
D)   The culture medium must be selective.
E)   The culture medium must be differential.F) A) and E)
G) C) and D)

Question 4

Mannitol salt agar is selective for which bacterial genus?

Accepted Answer

A)  Salmonella
B)  Streptococcus
C)  Neisseria
D)  Staphylococcus
E)  EscherichiaF) C) and E)
G) A) and E)

Question 5

All of the following pertain to the fluorescence microscope except it

Accepted Answer

A)  uses electron's to produce a specimen image.
B)  is a type of compound microscope.
C)  requires the use of dyes like acridine and fluorescein.
D)  is commonly used to diagnose certain infections.
E)  requires an ultraviolet radiation source.F) A) and B)
G) A) and C)

Question 6

All of the following are diameters of cells that would be resolved in a microscope with a limit of resolution of 0.2 µm except

Accepted Answer

A)  0.2 µm.
B)  0.2 mm.
C)  0.1 µm.
D)  0.3 µm.
E)  2.0 µm.F) A) and B)
G) A) and E)

Question 7

Mixed cultures are also referred to as contaminated cultures.

Accepted Answer

A) True 
 B)False

Question 8

Why is immersion oil often used when viewing specimens under the microscope?

Accepted Answer

A)  to stain the cells blue
B)  to prevent the smear from drying out
C)  to slow bacterial movement so you can see cells better
D)  to increase the resolution
E)  to reduce the amount of heat reaching the slide from the light sourceF) A) and C)
G) All of the above

Question 9

In lab, Tom was given a mixed culture.His objective is to isolate single colonies.What should be used to accomplish this goal?

Accepted Answer

A)  Sterile swab, loop dilution, TSB
B)  Hockey stick, spread plate technique, and 4 degree Celsius incubation temperature
C)  Loop dilution, TSA, hockey stick, 37 degree Celsius incubator
D)  Inoculating loop, incinerator, streak plate method, 37 degree Celsius incubator
E)  Sterile swab, streak plate method, 37 degree Celsius incubatorF) B) and C)
G) B) and D)

Question 10

Newly inoculated cultures must be _____ at a specific temperature and time to encourage growth.

Accepted Answer

The answer of Newly inoculated cultures must be _____ at...

Question 11

One colony typically develops from the growth of several parent bacterial cells.

Accepted Answer

A) True 
 B)False

Question 12

A contaminated food sample contains several different species of bacteria.A food microbiologist is interested in studying just one of these species.Describe the sequence of procedures that the microbiologist must perform in order to obtain a pure culture of the bacterial species of interest from this food sample.Detail all the necessary media and equipment.

Accepted Answer

The microbiologist must first obtain a s...

Question 13

The correct microbiological term for the tiny sample of specimen that is put into a nutrient medium in order to produce a culture is the _____.

Accepted Answer

The answer of The correct microbiological term for the tiny...

Question 14

The Gram stain, acid-fast stain, and endospore stain ____________.

Accepted Answer

A)  are used on a wet mount of the specimen
B)  use heat to force the dye into cell structures
C)  have outcomes based on cell wall differences
D)  use a negative stain technique
E)  are differential stainsF) B) and C)
G) A) and B)

Question 15

Sally had a throat sample taken at a satellite lab within her health care provider's office.What kind of media would be best suited for this specimen?

Accepted Answer

A)  TSA plate
B)  TSB tube
C)  Transport media
D)  Pour plate
E)  Quadrant streak plateF) C) and E)
G) A) and D) C

Question 16

_____ is the term for a culture made from one isolated colony.

Accepted Answer

The answer of _____ is the term for a culture...

Question 17

Bacteria that require special growth factors and complex nutrients are termed _____.

Accepted Answer

The answer of Bacteria that require special growth factors and...

Question 18

Identification relies entirely on biochemical test results.

Accepted Answer

A) True 
 B)False  False

Question 19

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

Accepted Answer

A)  bright-field.
B)  dark-field.
C)  phase-contrast.
D)  fluorescence.
E)  electron.F) All of the above
G) A) and B) B

Question 20

Media that contains extracts from plants, animals, or yeasts are

Accepted Answer

A)  synthetic.
B)  complex.
C)  reducing.
D)  enriched.
E)  All of the choices are correct.F) A) and C)
G) A) and E)

Exam 3: Tools of the Laboratory: Methods of Studying Microorganisms

The Six I's of studying microorganisms include all of the following except

Correct Answer
verified

Compare and contrast the reagents and functions of negative staining versus positive staining.

Correct Answer
Answered by ExamLex AI
Negative staining and positive staining ...
View Answer

A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?

Correct Answer
verified

Mannitol salt agar is selective for which bacterial genus?

Correct Answer
verified

All of the following pertain to the fluorescence microscope except it

Correct Answer
verified

All of the following are diameters of cells that would be resolved in a microscope with a limit of resolution of 0.2 µm except

Correct Answer
verified

Mixed cultures are also referred to as contaminated cultures.

Correct Answer
verified

Why is immersion oil often used when viewing specimens under the microscope?

Correct Answer
verified

In lab, Tom was given a mixed culture.His objective is to isolate single colonies.What should be used to accomplish this goal?

Correct Answer
verified

Newly inoculated cultures must be _____ at a specific temperature and time to encourage growth.

Correct Answer
verified

One colony typically develops from the growth of several parent bacterial cells.

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The microbiologist must first obtain a s...
View Answer

The correct microbiological term for the tiny sample of specimen that is put into a nutrient medium in order to produce a culture is the _____.

Correct Answer
verified

The Gram stain, acid-fast stain, and endospore stain ____________.

Correct Answer
verified

Sally had a throat sample taken at a satellite lab within her health care provider's office.What kind of media would be best suited for this specimen?

Correct Answer
verified
C

_____ is the term for a culture made from one isolated colony.

Correct Answer
verified

Bacteria that require special growth factors and complex nutrients are termed _____.

Correct Answer
verified

Identification relies entirely on biochemical test results.

Correct Answer
verified
False

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

Correct Answer
verified
B

Media that contains extracts from plants, animals, or yeasts are

Correct Answer
verified

Exam 3: Tools of the Laboratory: Methods of Studying Microorganisms

The Six I's of studying microorganisms include all of the following except

Correct AnswerverifiedShow Answer

Compare and contrast the reagents and functions of negative staining versus positive staining.

Correct AnswerAnswered by ExamLex AINegative staining and positive staining ...View AnswerShow Answer

A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?

Correct AnswerverifiedShow Answer

Mannitol salt agar is selective for which bacterial genus?

Correct AnswerverifiedShow Answer

All of the following pertain to the fluorescence microscope except it

Correct AnswerverifiedShow Answer

All of the following are diameters of cells that would be resolved in a microscope with a limit of resolution of 0.2 µm except

Correct AnswerverifiedShow Answer

Mixed cultures are also referred to as contaminated cultures.

Correct AnswerverifiedShow Answer

Why is immersion oil often used when viewing specimens under the microscope?

Correct AnswerverifiedShow Answer

In lab, Tom was given a mixed culture.His objective is to isolate single colonies.What should be used to accomplish this goal?

Correct AnswerverifiedShow Answer

Newly inoculated cultures must be _____ at a specific temperature and time to encourage growth.

Correct AnswerverifiedShow Answer

One colony typically develops from the growth of several parent bacterial cells.

Correct AnswerverifiedShow Answer

Correct AnswerAnswered by ExamLex AIThe microbiologist must first obtain a s...View AnswerShow Answer

The correct microbiological term for the tiny sample of specimen that is put into a nutrient medium in order to produce a culture is the _____.

Correct AnswerverifiedShow Answer

The Gram stain, acid-fast stain, and endospore stain ____________.

Correct AnswerverifiedShow Answer

Sally had a throat sample taken at a satellite lab within her health care provider's office.What kind of media would be best suited for this specimen?

Correct AnswerverifiedC

_____ is the term for a culture made from one isolated colony.

Correct AnswerverifiedShow Answer

Bacteria that require special growth factors and complex nutrients are termed _____.

Correct AnswerverifiedShow Answer

Identification relies entirely on biochemical test results.

Correct AnswerverifiedFalse

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

Correct AnswerverifiedB

Media that contains extracts from plants, animals, or yeasts are

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
Negative staining and positive staining ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
Answered by ExamLex AI
The microbiologist must first obtain a s...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified
B

Correct Answer
verified