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Flashcards in Microbio Deck (36)
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1

What is mannitol salt agar used to grow?
A. Streptococcus
B. Staphylococcus
C. E. Coli

B. Staphylococcus

2

Deoxyribonuclease in a medium inhibits ____?
A. Transcription
B. Translation
C. Transformation

C. Transformation

3

Which of the following are negri bodies seen in?
A. Alzheimers
B. Rabies
C. Measles
D. Mumps

B. Rabies

4

Which of the following is an advantage of passive immunity?

A. Rapid availability of protection

5

Which of the following release IL-2?
A. B-lymphocytes
B. T-lymphocytes
C. Monocytes
D. Plasma cells

B. T-lymphocytes

6

Which of the following is caused by a virus?
A. Measles
B. Toxoplasmosis
C. Lyme disease

A. Measles

7

Which of the following describes destruction of all microorganisms?
A. Sanitization
B. Sterilization
C. Autoclaving

B. Sterilization

8

Fever blisters are associated with which of the following?
A. Herpes simplex type I
B. Herpes simplex type II
C. Gonorrhea

A. Herpes simplex type I

9

Which of the following is an acid fast bacterium?
A. Staphylococcus
B. Streptococcus
C. Mycobacterium

C. Mycobacterium

10

A medium on which colonies of lactose fermenting bacteria are easily distinguished from non-lactose fermenting colonies by their appearance is an example of:
A. a selective medium
B. a differential medium
C. a medium which is both selective and differential
D. a medium which allows recognizing rickettsiae
E. a technique of little use in diagnosis

B. a differential medium

11

In general what are exotoxins?
A. lipopolysaccharides, poor antigens, produced by gram-negative bacteria
B. proteins, good antigens, produced by gram-negative bacteria
C. proteins, poor antigens, produced by gram-positive bacteria
D. proteins, good antigens, produced by gram-positive bacteria

D. proteins, good antigens, produced by gram-positive bacteria

12

Which is the basis for subclassifications of staphylococci?
A. Quellung reaction
B. C substance present in cell wall
C. M substance (protein)
D. phage typing
E. antibiotic susceptibility and resistance characteristics

D. phage typing

13

Bacterial transformation depends on;
A. a virus intermediate
B. a competent cell taking up DNA from growth medium
C. a conjugation tube forming
D. DNA-ase secreted into the medium
E. heavily encapsulated organisms making contact with each other

B. a competent cell taking up DNA from growth medium

14

What does a "hanging drop" procedure identify?
A. a motile organism
B. a gram + bacterium
C. a gram - bacterium
D. an encapsulated microbe
E. an acid-fast cell

A. a motile organism

15

What is the connector between donors and recipients in bacterial conjugation?
A. A flagellum
B. double stranded DNA
C. single strand RNA
D. a pilus
E. an axial filament

D. a pilus

16

Which of the following is most closely related to the Rickettsias?
A. blue-green algae
B. mites
C. viruses
D. bacteria
E. ticks

C. viruses

17

Which does not relate to the true bacteria?
A. pili
B. capsule
C. cell wall
D. fermentation
E. distinct nuclear membrane

E. distinct nuclear membrane

18

WOF is the method of reproduction of true bacteria?
A. sporulation
B. binary fission
C. transformation
D. transduction
E. all of the above

B. binary fission

19

The chromosome of E. coli consists of approximately ____ genes.
A. 1
B. 2
C. 23
D. 5000
E. 4.5 million

D. 5000

20

Who laid the groundwork for modern observational microbiology and was born in the Dutch republic during the 17th century?
A. Spinoza
B. Rembrant
C. Van Leeuwenhoek
D. Van Rumstead
E. Koch

C. Van Leeuwenhoek

21

Spirochetes generally possess:
A. rigid cell wall
B. pili
C. axial fibers
D. chromoplasts
E. conjugation tubes

C. axial fibers

22

WOF is NOT an anatomical structure of true bacteria?
A. pilus
B. flagellum
C. nuclear membrane
D. plasma membrane
E. DNA

C. nuclear membrane

23

WOF pertains to the outermost covering of a virus particle?
A. capsid
B. flagellum
C. cell
D. capsule
E. spore coats

A. capsid

24

Physiologically, viruses are most closely related to:
A. bacteria
B. rickettsia
C. fungi
D. mold
E. yeast

B. rickettsia

25

Which procedure is used to differentiate genus Mycobacterium from other bacterial genera?
A. gram stain
B. spore stain
C. acid-fast stain
D. Widal test

C. acid-fast stain

26

When the genes for a certain pway are always "turned on" in the cell, the enzymes are said to be:
A. inducible
B. repressible
C. constitutive
D. mutated

C. constitutive

27

What is the reaction where 1,3 diphosphoglycerate loses one of its PO4 molecules to form ATP from ADP called:
A. fermentation
B. oxidation
C. oxidative phosphorylation
D. substrate level phosphorylation

D. substrate level phosphorylation

28

Streptococcus would give WOF fermentation products from glucose?
A. butyl alcohol and H2
B. 2,3 butane diol
C. lactate
D. ethanol and CO2
E. expectorate

C. lactate

29

Identify the function associated with the cytochrome system:
A. it uses ATP to produce H2O
B. it drains electron energy to produce ATP
C. it removes electrons from glucose
D. it adds electrons to NAD

B. it drains electron energy to produce ATP

30

NAD contains:
A. nicotinic acid and adenlytic acid
B. nicotinic acid and 3 PO4
C. thiamine
D. thymine

A. nicotinic acid and adenlytic acid