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Which of the following microbes are likely to be the swiftly moving ʺanimalculesʺ observed by Leeuwenhoek in pond water?


A) fungi
B) protozoa
C) viruses
D) fungi and algae
E) algae

F) A) and B)
G) None of the above

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Lazzaro Spallanzani was the first scientist to provide evidence disproving the spontaneous generation of microorganisms.

A) True
B) False

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Joseph Lister reduced the incidence of wound infections in health care settings by using chlorinated lime water.

A) True
B) False

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Semmelweis advocated hand washing as a method of preventing which of the following diseases?


A) smallpox
B) cholera
C) anthrax
D) syphilis
E) puerperal fever

F) A) and E)
G) A) and D)

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Paul Ehrlich used chemotherapy to treat


A) cholera.
B) syphilis.
C) cancer.
D) anthrax.
E) smallpox.

F) B) and D)
G) B) and C)

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The term that literally means ʺagainst putrefactionʺ is


A) prokaryote.
B) abiogenesis.
C) chemotherapy.
D) recombinant technology.
E) antisepsis.

F) A) and B)
G) A) and E)

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A microbe with a cell wall and no internal membrane enclosing the DNA is a prokaryote.)

A) True
B) False

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John Snowʹs research during a cholera outbreak in London laid the foundation for which of the following branches of microbiology?


A) infection control, epidemiology, and immunology
B) both infection control and epidemiology
C) epidemiology only
D) immunology only
E) infection control only

F) All of the above
G) A) and D)

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Ignaz Semmelweis demonstrated the importance of (antisepsis/vaccination/washing) as a means of preventing disease transmission.

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Microbes that cause infectious disease are called (pathogens/germs/viruses).

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Kochʹs postulates can be used only to determine the causes of infectious diseases.

A) True
B) False

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Edward Jennerʹs efforts to prevent smallpox provided the foundation for the field of


A) chemotherapy.
B) etiology.
C) epidemiology.
D) molecular biology.
E) immunology.

F) A) and B)
G) A) and D)

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The (alga/fungi/protozoa) are non -motile eukaryotes with cell walls that are not photosynthetic and may be multicellular.

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Recent estimates of the number of microbes on the planet have expanded almost exponentially, but the number of microorganisms isolated in the lab has not increased at the same rate. How can microbiologists justify the higher estimates if they cannot isolate and grow the microbes in the lab?


A) The huge numbers of diseases without apparent causative agents indicate there are large numbers of unidentified pathogens.
B) Detection of novel enzymes indicates the existence of unidentified microbes.
C) Previous estimates of the abundance of microbes cannot account for the detectable biomass in most environments.
D) New technologies make it possible to detect the nucleic acid sequences of previously unknown organisms.
E) Much more powerful microscopes have made it possible to observe and identify huge numbers of microbes that cannot be isolated.

F) B) and D)
G) B) and E)

Correct Answer

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All of the following were involved in developing the germ theory of disease EXCEPT


A) Pasteur.
B) Pauling.
C) Koch.
D) Snow.
E) Fracastoro.

F) A) and E)
G) C) and E)

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