History of Microbiology - Mock Test 15

Question 141

E.coli was first isolated by?

A) Louis Pasteur B) Escherich C) Shiga D) Robert Koch

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Question 142

Vibrio Cholerae was discovered by?

A) Koch B) Metchnikoff C) John Snow D) Virchow

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Question 143

Which is the following enzyme acts as a spreading factor?

A) Hyaluronidase B) Coagulase C) Catalase D) DNase

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Question 144

The ability of a pathogen to spread in ths host tissues after establishing the infection is known as?

A) Adhesion B) Invasiveness C) Toxigenicity D) None of these

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Question 145

The virulence of a pathogen is usually measured by?

A) LD B) MLD C) ID D) All of the above

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Question 146

Enhancement of virulence is known as?

A) Exaltation B) Attenuation C) Both a and b D) None of these

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Question 147

Reduction of virulence is known as?

A) Exaltation B) Attenuation C) Both a and b D) None of these

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Question 148

If a person can be infected by direct contact with infected tissue of another person, it is termed as?

A) Indirect contact transmission B) Attachment C) Direct contact transmission D) None of these

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Question 149

If the vectors transmit the infection mechanically they are called?

A) Biological vectors B) Mechanical vectors C) Biological reservoir D) Both a and c

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Question 150

Disease that effects many people at different countries is termed as?

A) Sporadic B) Pandemic C) Epidemic D) Endemic

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