Microbiology Exam For Students! Trivia Questions

44 Questions | By Jaymunro | Last updated: Mar 21, 2022 | Total Attempts: 247

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Microbiology Exam For Students! Trivia Questions - Quiz

As we continue to polish up our skills when it comes to microbiology in preparation for the main exam, I have prepared a set of prep questions to help you meet the marks that you desire in the finals. Think that you can handle it? Take this first quiz and get to show us what you recall from class as we remind you of others. Best of luck!

Questions and Answers

1.

You get the following antibody titers against West Nile Virus in three patients. Which patient probably has a current infection? Patient A: 128 IgG, 0 IgM. Patient B: 128 IgG, 256 IgM. Patient C: 0 IgG, 0 IgM.
- A.
  
  Patient A
- B.
  
  Patient C
- C.
  
  Patients A and C
- D.
  
  Patient B
2.

Which if the following is an example of contact transmission?
- A.
  
  Several people become infected with Listeria after consuming contaminated ice cream
- B.
  
  Tuberculosis is spread from one person to another after travelling through the air for several meters
- C.
  
  Vacationers develop shigellosis, caused by the intestinal pathogen Shigella sp., after drinking contaminated water
- D.
  
  A person develops plague from a flea bite
- E.
  
  A person drinks from a cup used by another individual
3.

A vaccine consisting of an inactivated diphtheria toxin is called a(n):
- A.
  
  Subunit vaccine
- B.
  
  Conjugated vaccine
- C.
  
  Toxoid
- D.
  
  Attenuated whole agent vaccine
4.

Assume you mix red blood cells, antibodies against red blood cells, and complement in a test tube. What would you expect to see?
- A.
  
  Opsonization
- B.
  
  Phagocytosis
- C.
  
  Lysis of the red blood cells
- D.
  
  Agglutination of the red blood cells
5.

Which of the following effects is most likely to occur if a pathogen enters the body by a portal of entry other than the preferred one?
- A.
  
  A more severe disease will result
- B.
  
  Pathogens cannot enter by alternate routes
- C.
  
  A milder disease will result
- D.
  
  A different disease of the same severity will result
6.

A fungus that produces sporangiospores and zygospores and has hyphae without cross-walls would be classified in the category:
- A.
  
  Zygomycota
- B.
  
  Deuteromycota
- C.
  
  Anamorph
- D.
  
  Basidiomycota
- E.
  
  Ascomycota
7.

Antibodies can have all of the following effects on target cells except what?
- A.
  
  Agglutination
- B.
  
  Neutralization
- C.
  
  Opsonization
- D.
  
  Lysis
8.

Histamine causes all of the following reactions. Which occurs first?
- A.
  
  Pain
- B.
  
  Redness
- C.
  
  Swelling
- D.
  
  Vasodilation
9.

Assume that your job is to produce antibodies against the deadly puff adder (snake) venom. How would you do this?
- A.
  
  None of the above
- B.
  
  Find someone who has been bitten
- C.
  
  Vaccinate a cow
- D.
  
  Get antibodies from a puff adder
10.

Rickettsias are different from most other bacteria because they:
- A.
  
  Require other bacteria to help them
- B.
  
  Are intracellular parasites
- C.
  
  Are gram-negative
- D.
  
  Lack cell walls
11.

Which of the following is the third stage of a disease?
- A.
  
  Incubation period
- B.
  
  Period of decline
- C.
  
  Period of illness
- D.
  
  Prodromal period
- E.
  
  Period of convalescence
12.

During the bacteriophage lysogenic cycle:
- A.
  
  The burst time is shortened
- B.
  
  The host cell lyses, releasing new virions
- C.
  
  Phage DNA is inserted into the host chromosome
- D.
  
  New phage DNA is synthesized
- E.
  
  No attachment occurs
13.

The first step in biosynthesis of rhabdoviruses, - strand RNA viruses, is production of:
- A.
  
  Proteins from an mRNA template
- B.
  
  DNA from an RNA template
- C.
  
  MRNA from a DNA template
- D.
  
  MRNA from an RNA template
14.

Your lab partner slipped on his way to class. He scraped his arm without drawing blood. You make a smear of the fluid from his scrape and observe large nucleated cells. These cells are most likely:
- A.
  
  Neutrophils
- B.
  
  Erythrocytes
- C.
  
  Lymphocytes
- D.
  
  Bacteria
15.

Which of the following virulence factors does not contribute to the spread of a disease in the body?
- A.
  
  Fibrinolysin
- B.
  
  Hemolysin
- C.
  
  Hyaluronidase
- D.
  
  Collagenase
16.

Which is not correctly matched?
- A.
  
  Pinworm : complete digestive system
- B.
  
  Roundworm : complete digestive system
- C.
  
  Tapeworm : no digestive system
- D.
  
  Hookworm : incomplete digestive system
- E.
  
  Fluke : incomplete digestive system
17.

Streptomyces are bacteria and not fungi because Streptomyces:
- A.
  
  Have prokaryotic cells
- B.
  
  Form filaments
- C.
  
  Produce conidiospores
- D.
  
  Can cause disease
18.

Viruses that use RNA as a template for transcribing DNA include:
- A.
  
  Togaviridae
- B.
  
  Herpesviridae
- C.
  
  Picornaviridae
- D.
  
  Retroviridae
- E.
  
  Rhabdoviridae
19.

Symptoms of helminthic diseases are usually due to:
- A.
  
  Toxins
- B.
  
  The helminth eating its host
- C.
  
  The parasite eating the host's food
- D.
  
  The presence of the parasite
20.

Which of the following contributes to the difficulty in establishing the aetiology of cancer?
- A.
  
  Most viral particles can infect cells without inducing cancer
- B.
  
  Cancer may not develop until long after infection
- C.
  
  Cancers do not seem to be contagious
- D.
  
  Viruses are difficult to observe
- E.
  
  All of the above.
21.

Virulence refers to:
- A.
  
  The numer of people in a population who are infected by a certain pathogen
- B.
  
  The degree or intensity of pathogenicity
- C.
  
  A pathogen that has lost its ability to produce disease
- D.
  
  Pathogens that only infect people with a repressed immune system
- E.
  
  Pathogens that are spread through the soil
22.

An encapsulated bacterium can be virulent because the capsule
- A.
  
  Resists phagocytosis
- B.
  
  Is an endotoxin
- C.
  
  Destroys host tissues
- D.
  
  Interferes with physiological processes
- E.
  
  Has no effect; since many pathogens do not have capsules, capsules do not contribute to virulence.
23.

The dose of microbes required to produce a measurable infection in half of the animals tested is referred to by the abbreviated term ______________.
- A.
  
  ID50
24.

_______________ are substances produced by bacteria that can destroy neutrophils and macrophages.
- A.
  
  Leukocidins
25.

__________________ are bacterial enzymes that lyse erythrocytes.
- A.
  
  Haemolysins