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NEETMDS- Microbiology mcq
MDS PREP
The active immunity offered by tetanus toxoid is effectively in nearly:




1. 25 % of the patients.


2. 50 % of the patients.


3. 75 % of the patients.


4. 100 % of the patients.
Microbiology Answer: 4

80 - 100 % so nearly 100 -- 75 % also equally correct

The best method of storing sterile instruments is to

1. place items in chemical disinfecting solution until ready to use

2. keep the items in the same pack ages as were prepared for sterilization

3. leave packages in autoclave for temporary storage

4. keep items between sterile towels in a dust free dental cabinet


Microbiology Answer: 2

 

A positive character of the phenol disinfectant is, that it
1. has a cumulative effect with repeated usage
2. is very effective against Mycobacterium tuberculosis
3. leaves the skin oils intact
4. kills hepatitis viruses
Microbiology Answer: 1

Aerobic microbial metabolism is characterized by which of the following end products?
1 Hydrogen and pyruvate
2 Lactic acid
3. Carbondioxide and water
4. Fatty acids
Microbiology Answer: 3

Fluoride affects the metabolism of oral bacteria by inhibiting an enzyme in which of the following pathways?
1. Glycolytic
2. Folic acid
3. Citric acid
4. Aspartate biosynthetic
Microbiology Answer: 1

which of the following is true regarding the pathogenicity of the mycobacterium species:

1 M. tb is more pathogenic than m.bovis to humans
2 M.kansaaii can cause disease indistinguishable from tuberculosis
3 M.africanum is acquired from the enviourmenatal source
4 M.marinum is responsible for tubercular lymphadenopathy
Microbiology Answer: 1

Practical methods of sterilization that are in general use in hospitals and clinics are
1. gas sterilization
2. autoclaving
3. dry heat sterilization
4. all of the above
Microbiology Answer: 4

All bacterial activity has one thing common, the production of
1. odor
2. pigment
3. light
4 heat
Microbiology Answer: 4

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