MDS PREP

The chemical nature of bacterial exotoxins is, a

1. low molecular weight polypeptide

2. lipopolysaccharide complex

3. protein

4. complex carbohydrate

Microbiology Answer: 2

The chemical nature of bacterial exotoxins is, a
lipopolysaccharide complex

When a diagnostic test is used in "series" mode, then:

1. Sensitivity increases but specificity decreases.
2. Specificity increases but sensitivity decreases.
3. Both sensitivity and specificity increase
4. Both sensitivity and specificity decrease

Microbiology Answer: 2

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

Microbiology Answer: 4

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

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

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

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

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

MDS PREP

The chemical nature of bacterial exotoxins is, a

1. low molecular weight polypeptide

2. lipopolysaccharide complex

3. protein

4. complex carbohydrate

When a diagnostic test is used in "series" mode, then:

1. Sensitivity increases but specificity decreases.
2. Specificity increases but sensitivity decreases.
3. Both sensitivity and specificity increase
4. Both sensitivity and specificity decrease

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

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

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

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

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MDS PREP

The chemical nature of bacterial exotoxins is, a 1. low molecular weight polypeptide 2. lipopolysaccharide complex 3. protein 4. complex carbohydrate

When a diagnostic test is used in "series" mode, then: 1. Sensitivity increases but specificity decreases.2. Specificity increases but sensitivity decreases.3. Both sensitivity and specificity increase 4. Both sensitivity and specificity decrease

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

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

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

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

Explore by subjects

The chemical nature of bacterial exotoxins is, a

1. low molecular weight polypeptide

2. lipopolysaccharide complex

3. protein

4. complex carbohydrate

When a diagnostic test is used in "series" mode, then:

1. Sensitivity increases but specificity decreases.
2. Specificity increases but sensitivity decreases.
3. Both sensitivity and specificity increase
4. Both sensitivity and specificity decrease

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

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

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

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