Question 1

A medium that is gel-like has less agar in it compared to a solid medium.

Accepted Answer

A) True 
 B)False

Question 2

A common medium used for growing fastidious bacteria is

Accepted Answer

A)  blood agar.
B)  trypticase soy agar.
C)  mannitol salt agar.
D)  MacConkey medium.
E)  a reducing medium.F) A) and D)
G) A) and C)

Question 3

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) B) and C)
G) A) and E)

Question 4

For which bacterial genus is mannitol salt agar selective?

Accepted Answer

A)  Salmonella
B)  Streptococcus
C)  Neisseria
D)  Staphylococcus
E)  EscherichiaF) D) and E)
G) All of the above

Question 5

A selective medium contains one or more substances that inhibit growth of certain microbes in order to facilitate the growth of other microbes.

Accepted Answer

A) True 
 B)False

Question 6

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 7

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

Accepted Answer

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

Question 8

Scanning tunneling and atomic force microscopes are used to image the detailed structure of biological molecules.

Accepted Answer

A) True 
 B)False

Question 9

A bacterial species that grows on blood agar but will not grow on trypticase soy agar is termed an anaerobe.

Accepted Answer

A) True 
 B)False

Question 10

Which is incorrect about chocolate agar?

Accepted Answer

A)  It can be used to cultivate Neisseria.
B)  It usually uses sheep blood that has been heated.
C)  It has chocolate extract in it.
D)  It is an enriched medium.
E)  It is used to grow fastidious bacteria.F) C) and D)
G) B) and D)

Question 11

Which of the following characteristics refers to the microscope's ability to show two separate entities as separate and distinct?

Accepted Answer

A)  resolving power
B)  magnification
C)  refraction
D)  All of the choices are correct
E)  None of the choices are correctF) A) and B)
G) B) and D)

Question 12

This microscope is the most widely used and shows cells against a bright background:

Accepted Answer

A)  bright-field
B)  dark-field
C)  phase-contrast
D)  fluorescence
E)  electronF) A) and B)
G) None of the above

Question 13

At the end of the Gram stain, gram-positive bacteria will be seen as purple cells.

Accepted Answer

A) True 
 B)False

Question 14

Why is oil of immersion 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) A) and D)

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

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

Correct Answer
verified

All of the following pertain to the fluorescence microscope except it

Correct Answer
verified

Which of the following characteristics refers to the microscope's ability to show two separate entities as separate and distinct?

Correct Answer
verified

A selective medium contains one or more substances that inhibit growth of certain microbes in order to facilitate the growth of other microbes.

Correct Answer
verified

At the end of the Gram stain, gram-positive bacteria will be seen as purple cells.

Correct Answer
verified

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

Correct Answer
verified

A bacterial species that grows on blood agar but will not grow on trypticase soy agar is termed an anaerobe.

Correct Answer
verified

A medium that is gel-like has less agar in it compared to a solid medium.

Correct Answer
verified

Scanning tunneling and atomic force microscopes are used to image the detailed structure of biological molecules.

Correct Answer
verified

A common medium used for growing fastidious bacteria is

Correct Answer
verified

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

Correct Answer
verified

Which is incorrect about chocolate agar?

Correct Answer
verified

This microscope is the most widely used and shows cells against a bright background:

Correct Answer
verified

For which bacterial genus is mannitol salt agar selective?

Correct Answer
verified

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

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

Correct AnswerverifiedShow Answer

All of the following pertain to the fluorescence microscope except it

Correct AnswerverifiedShow Answer

Which of the following characteristics refers to the microscope's ability to show two separate entities as separate and distinct?

Correct AnswerverifiedShow Answer

A selective medium contains one or more substances that inhibit growth of certain microbes in order to facilitate the growth of other microbes.

Correct AnswerverifiedShow Answer

At the end of the Gram stain, gram-positive bacteria will be seen as purple cells.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A bacterial species that grows on blood agar but will not grow on trypticase soy agar is termed an anaerobe.

Correct AnswerverifiedShow Answer

A medium that is gel-like has less agar in it compared to a solid medium.

Correct AnswerverifiedShow Answer

Scanning tunneling and atomic force microscopes are used to image the detailed structure of biological molecules.

Correct AnswerverifiedShow Answer

A common medium used for growing fastidious bacteria is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which is incorrect about chocolate agar?

Correct AnswerverifiedShow Answer

This microscope is the most widely used and shows cells against a bright background:

Correct AnswerverifiedShow Answer

For which bacterial genus is mannitol salt agar selective?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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