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Home ‣ Microbiology ‣ Industrially Useful Microbial Processes See What Others Are Saying!
  • Question

  • Which of the following when used in proper concentration stimulates the Ascomycetes fermentation of vitamin B12 and can be used to counteract toxicity of iron in Candida species?


  • Options
  • A. Co
  • B. Ni
  • C. Zn
  • D. Ca

  • Correct Answer
  • Co 

    • More questions

    • 1. RNA populations can also be used as PCR templates after reverse transcription into

    • Options
    • A. c DNA
    • B. t RNA
    • C. m DNA
    • D. r RNA
      • Discuss
    • 2. Which type of interferon is produced by T lymphocytes?

    • Options
    • A. ?
    • B. ?
    • C. ?
    • D. ? and ?
      • Discuss
    • 3. Agglutination reaction is more sensitive than precipitation for the detection of

    • Options
    • A. antigens
    • B. antibodies
    • C. complement
    • D. antigen-antibody complexes
      • Discuss
    • 4. Intracytoplasmic inclusion bodies are found in cells infected with

    • Options
    • A. Rabies virus
    • B. Vaccinia virus
    • C. Fowlpox virus
    • D. all of these
      • Discuss
    • 5. The immediate source of the flat sour bacteria is usually the

    • Options
    • A. plant equipment
    • B. sugar
    • C. starch
    • D. soil
      • Discuss
    • 6. The yield of phage per bacterium is called the

    • Options
    • A. eclipse size
    • B. latent size
    • C. burst size
    • D. none of these
      • Discuss
    • 7. Which of the following is the phylogenetically oldest immunoglobulin?

    • Options
    • A. IgE
    • B. IgM
    • C. IgG
    • D. All are similar
      • Discuss
    • 8. Which of the following structure(s) is /are external to cell wall?

    • Options
    • A. Flagella
    • B. Stalks
    • C. Sheath
    • D. All of these
      • Discuss
    • 9. Characteristics used to place algae into divisions include all of the following except

    • Options
    • A. form of storage material
    • B. flagella number and location
    • C. accessor pigments used in photosynthesis
    • D. all of the above
      • Discuss
    • 10. The repressor protein, since the cell is resistant to lysis from externally infecting phage, is also called

    • Options
    • A. immunity repressor
    • B. immunity operon
    • C. operon repressor
    • D. none of these
      • Discuss

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