A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. A person working in abattoir with pustules on hand which turned into ulcer. Which of the following would help best in diagnosis?
A. Polychrome Methylene Blue
B. Carbol fuschin
C. Acid Fast Stain
D. Calcoflour white
2. What is the shape of rabies virus?
A. Spherical
B. Polygonal
C. Bullet-shaped
D. Tubular
3. Which of the following is the agent associated with the development of neurodegenerative disease in livestock and humans?
A. Prions
B. Viroids
C. virions
D. Virinos
4. The term recrudescence in malaria refers to
A. Same as relapse in P. vivax and p. ovale malaria
B. Resistance to antimalarial drugs
C. Recurrence of sexual parasitemia after completion of treatment
D. Reinfection with the same species
5. Water activity can act as
A. an intrinsic factor determining the likelihood of microbial proliferation
B. a processing factor
C. an extrinsic factor
D. all of the above
6. Which of the following is best to sterilize heat labile solutions?
A. Dry heat
B. Autoclave
C. Membrane filtration
D. Pasteurization
7. Which of the following is/are included in Kingdom Prokaryotae?
A. Bacteria
B. Protozoa
C. Fungi
D. All of these
8. Which of the following clinical specimens can be used for the demonstration of rabies antigen by direct immunofluorescence antemortem?
A. Salivary smears
B. Corneal smears
C. Conjunctival smears
D. All of these
9. The most important kind of chemical spoilage of canned foods is the hydrogen swell which is favored by
A. increasing acidities of foods
B. increasing temperature of storage
C. imperfection in the tinning and lacquering
D. all of these
10. Marinated (sour pickled) fish should not have spoilage problems unless
A. the acid content is very high
B. the acid content is low enough
C. the acid content is moderate
D. none of the above
11. Human pathogenic bacteria is/are
A. B pseudomallei
B. Burkholderia mallei
C. Pseudomonas aeruginosa
D. All of these
12. The immediate source of the flat sour bacteria is usually the
A. plant equipment
B. sugar
C. starch
D. soil
13. Thiobacillus thiooxidans has an optimum pH of
A. 2.0-3.5
B. 0.5-6.0
C. 6.5-7.5
D. 9.0-9.5
14. The predominant kind of bacteria causing spoilage in fish at chilling temperature is
A. species of Pseudomonas
B. Micrococcus
C. Bacillus
D. none of these
15. Which of the following bacteria is susceptible to thiophen-2-carboxylic acid hydrazide?
A. M bovis
B. Mycobacterium tuberculosis
C. M chelonei
D. M fortuitum
16. Reduction is the
A. loss of proton
B. gain of electron
C. loss of electron
D. gain of protons
17. Suspension cultures consist of cells and cell aggregates, growing dispersed in
A. liquid medium
B. solid nutrient medium
C. solid or liquid medium
D. none of these
18. Catalase production is negative in which of the following?
A. Streptococcus
B. Salmonella
C. Proteus
D. Staphylococcus
19. How many molecules of carbon dioxide will be given off during ten turns of the Krebs cycle?
A. 10
B. 20
C. 30
D. 40
20. The solidifying agent commonly used in preparation of media is/are
A. agar
B. silica gel
C. both (a) and (b)
D. none of these
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