MDS PREP
What is the primary clinical significance of a deficiency in C5 to C8 components of the complement system?
1) Hereditary angioneurotic edema
2) Recurrent pyogenic infections
3) Systemic lupus erythematosus
4) Neisserial infections
Recurrent pyogenic infections are associated with a deficiency in C5 to C8 components of the complement system.
Which of the following bacteriophage types of diphtheria bacilli are associated with avirulent strains?
1) Type I and II
2) Type IV and VI
3) Type III
4) Type VII
Type VII bacteriophage types of diphtheria bacilli are associated with avirulent strains.
What is the purpose of the puncture-proof container in bio-medical waste management?
1) To contain sharps
2) To hold non-infectious waste
3) To store chemicals used for disinfection
4) To transport pathological waste
General Microbiology Answer: 1
The purpose of the puncture-proof container in bio-medical waste management is to contain sharps, preventing injuries and contamination.
What is the principle behind the Prausnitz and Kustner experiment demonstrating IgE-mediated type I hypersensitivity?
1) Injection of allergen into a non-allergic person causes an allergic reaction.
2) Transfer of serum containing allergen-specific IgE from an allergic person to a non-allergic person induces an allergic reaction.
3) Introduction of allergen-specific T cells into a non-allergic person induces an allergic reaction.
4) Exposure of a non-allergic person to high doses of an allergen induces tolerance.
General Microbiology Answer: 2the Prausnitz and Kustner experiment demonstrated Transfer of serum containing allergen-specific IgE from an allergic person to a non-allergic person induces an allergic reaction. This experiment showed that the allergic state is mediated by a serum component, which we now know is the immunoglobulin E (IgE), and that it can be passively transferred from one individual to another.
Most viruses are
1. never destroyed by the application of moist heat
2 easily destroyed by the application of moist heat
3 difficult to destroy by the application of moist heat
4 never destroyed because they are not living
Microbiology
Answer: 2
What is the typical pH range for optimal growth of meningococci?
1) 6.8-7.0
2) 7.4-7.6
3) 8.0-8.2
4) 7.0-7.2
The optimal pH range for the growth of meningococci is 7.4-7.6.
Which of the following is NOT a characteristic of anthracoid bacilli?
1) Generally motile
2) Non-capsulated
3) Grow in long chains
4) Pathogenic to laboratory animals
Anthracoid bacilli are generally non-motile and non-capsulated, and they do not grow in long chains.
The minimum and maximum temperature for normal metabolic
activity microorganisms that live on or within the human body is
1 50 C
to 300 C
2 200 C to 450
C
3. 300 C to 400
C
4. 15 C to 600
C
Microbiology Answer: 2
The minimum and maximum temperature for normal metabolic activity microorganisms that live on or within the human body is 20° C to 45°C