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  • Question
  • Which of the following tests is designed to simulate the natural conditions under which the disinfectants are used in hospitals?


  • Options
  • A. Phenol coefficient test
  • B. Minimum inhibitory concentration test
  • C. Capacity test
  • D. None of these

  • Correct Answer
  • Capacity test 


  • More questions

    • 1. It is mandatory that cultures and fermentation residues be sterilized before discard in case of Eremothecium ashbyii and Ashbya gossypii because they are

    • Options
    • A. plant pathogens
    • B. human pathogens
    • C. plant mutants
    • D. none of these
    • Discuss
    • 2. Self reactive antibodies are not found in significant concentration in normal serum because

    • Options
    • A. it is impossible to generate a self-reactive antibody
    • B. self reactive B cells are killed by CD8 T cells
    • C. B cells that are stimulated via their surface bound antibody in the absence of T cell help to commit suicide
    • D. self reactive B cells switch to IgA which is all secreted and not present in serum
    • Discuss
    • 3. Which of the following may account for the small size of the cells?

    • Options
    • A. The rate of diffusion
    • B. The surface area/volume ratio
    • C. The number of mRNAs that can be produced by the nucleus
    • D. All of the above
    • Discuss
    • 4. The original enzyme(s) used in PCR reaction is/are known as

    • Options
    • A. E. coli DNA polymerase
    • B. E. coli RNA polymerase
    • C. Taq polymerase
    • D. all of these
    • Discuss
    • 5. Fungi are important in the production of all of the following commercial products except

    • Options
    • A. bread
    • B. beer
    • C. cheese
    • D. rubber
    • Discuss
    • 6. Which of the following is least likely to have a rigid cell wall?

    • Options
    • A. Bacterium
    • B. Archaean
    • C. Fungus
    • D. Protozoan
    • Discuss
    • 7. The term used for plasmids possessing both RTF and r determinants is

    • Options
    • A. non self-transmissible plasmids
    • B. non conjugative plasmids
    • C. conjugative plasmids
    • D. none of the above
    • Discuss
    • 8. Which is most likely to be exposed on the surface of a gram-negative bacterium?

    • Options
    • A. Pore protein (porin)
    • B. Protein involved in energy generation
    • C. Lipoteichoic acid
    • D. Phospholipids
    • Discuss
    • 9. All of the following are features of prokaryotes except

    • Options
    • A. nitrogen fixation
    • B. photosynthesis
    • C. sexual reproduction
    • D. locomotion
    • Discuss
    • 10. High acid foods with a pH above 5.3 are especially subjected to

    • Options
    • A. flat sour spoilage
    • B. putrefaction
    • C. both (a) and (b)
    • D. TA spoilage
    • Discuss


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