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Home Microbiology Bacteria Morphology See What Others Are Saying!
  • Question
  • Which of the following structure(s) is /are external to cell wall?


  • Options
  • A. Flagella
  • B. Stalks
  • C. Sheath
  • D. All of these

  • Correct Answer
  • All of these 


  • More questions

    • 1. The substance(s) which can be produced by strains of Pseudomonas aeruginosa is/are

    • Options
    • A. Exotoxins A and S
    • B. Elastase
    • C. Haemolysins
    • D. All of these
    • Discuss
    • 2. Sylvatic plague occurs in

    • Options
    • A. mice
    • B. squirrels
    • C. chipmunks
    • D. all of these
    • Discuss
    • 3. If radioactive bicarbonate was supplied to bacterial cells, which were actively synthesizing fatty acids, it is expected to find the bulk of the radioactivity in

    • Options
    • A. cellular bicarbonate
    • B. the fatty acids
    • C. the cytoplasmic membrane
    • D. nucleic acids
    • Discuss
    • 4. Chemically the capsule may be

    • Options
    • A. polypeptide
    • B. polysaccharide
    • C. either (a) or (b)
    • D. none of these
    • Discuss
    • 5. Which of the following possesses both 5'-3' and 3'-5' exonuclease activity?

    • Options
    • A. Kornberg enzyme
    • B. DNA polymerase III
    • C. Taq DNA polymerase
    • D. None of these
    • Discuss
    • 6. The screening test/s for diagnosis of HIV infection is/are

    • Options
    • A. ELISA
    • B. Latex agglutination
    • C. Dot blot assay
    • D. all of these
    • Discuss
    • 7. Which of the following is not an aminoglycoside antibiotic?

    • Options
    • A. Streptomycin
    • B. Neomycin
    • C. Kanamycin
    • D. Cephalosporin
    • Discuss
    • 8. Typical drumstick appearance of bacilli is generally seen in

    • Options
    • A. C perfringens
    • B. C botulinum
    • C. C tetani
    • D. C histolyticum
    • Discuss
    • 9. The structure responsible for motility of bacteria is

    • Options
    • A. pilli
    • B. flagella
    • C. sheath
    • D. capsules
    • Discuss
    • 10. Following are the defenses of the colon except

    • Options
    • A. sIgA
    • B. fast flow rate
    • C. dense resident microbiota
    • D. mucus
    • Discuss


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