Microorganisms and Disease MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Microorganisms and Disease, a fundamental topic in the field of Microbiology. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Microorganisms and Disease MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Microorganisms and Disease mcq questions that explore various aspects of Microorganisms and Disease problems. Each MCQ is crafted to challenge your understanding of Microorganisms and Disease principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Microbiology tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Microorganisms and Disease MCQs are your pathway to success in mastering this essential Microbiology topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Microorganisms and Disease. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Microorganisms and Disease knowledge to the test? Let's get started with our carefully curated MCQs!

Microorganisms and Disease MCQs | Page 17 of 28

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Q161.
Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine?

a.

The possession of a segmented RNA genome

b.

A limited number of capsule types

c.

The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings

d.

The ability of the Rotavirus to be transmitted faster

Discuss
Answer: (a).The possession of a segmented RNA genome
Q162.
Plastic implants can pose a serious nosocomial infection problem because

a.

phagocytes have trouble moving on the plastic surface

b.

phagocytes have trouble engulfing bacteria embedded in a biofilm

c.

infected implants usually have to be surgically removed

d.

all of the above

Discuss
Answer: (d).all of the above
Q163.
A major difference between EHEC and EPEC is

a.

EHEC secretes a Shiga-like toxin and EPEC does not

b.

EHEC possesses a type III secretion system and EPEC does not

c.

EPEC rearranges host cell actin and EHEC does not

d.

EPEC passes through the placenta to infect the fetus and EHEC does not

Discuss
Answer: (a).EHEC secretes a Shiga-like toxin and EPEC does not
Q164.
The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is

a.

heat killed virus

b.

live attenuated strains of all three immunological types

c.

small dosage of wild-type live viruses

d.

formalin-inactivated viruses

Discuss
Answer: (b).live attenuated strains of all three immunological types
Q165.
Which of the following is true regarding anthrax?

a.

Anthrax is caused by a virus

b.

Anthrax is highly contagious

c.

Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis

d.

Inhalation Anthrax requires infection with a large number of spores

Discuss
Answer: (d).Inhalation Anthrax requires infection with a large number of spores
Q166.
The toxins produced by bacteria

a.

kill viruses

b.

encourage bacterial reproduction

c.

interfere with physiological processes in the body

d.

all of the above

Discuss
Answer: (c).interfere with physiological processes in the body
Q167.
Pseudomembraneous colitis is

a.

precipitated by the use of certain antibiotics

b.

caused by a gram-positive bacterium

c.

caused by a spore-forming bacterium

d.

all of the above

Discuss
Answer: (d).all of the above
Q168.
Both Mycobacterium tuberculosis and Streptococcus pneumoniae

a.

are acquired by inhalation

b.

have cell walls that contain a high content of mycolic acids

c.

have polysaccharide capsules

d.

stay in the lung and rarely, if ever, enter the bloodstream

Discuss
Answer: (a).are acquired by inhalation
Q169.
Cholera toxin is an A-B type toxin in which the B portions bind to a receptor on a host cell and the A portion enters the cell to cause

a.

ADP ribosylation of adenylate cyclase that stops production of cAMP

b.

ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP

c.

cleavage of rRNA that results in disruption of ribosome function

d.

ADP ribosylation of guanylate cyclase that stimulates production of cGMP

Discuss
Answer: (b).ADP ribosylation of a G protein that locks it into an active form that stimulates adenylate cyclase to make cAMP
Q170.
Mucus helps in protecting against pathogens by

a.

lowering the pH

b.

facilitating the growth of normal flora

c.

blocking access and attachment of pathogens to mucosal surfaces

d.

sequestering Iron

Discuss
Answer: (c).blocking access and attachment of pathogens to mucosal surfaces
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