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Home Microbiology Bacteria Morphology Comments

  • Question
  • 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

  • Correct Answer
  • Pore protein (porin) 


  • Bacteria Morphology problems


    Search Results


    • 1. Which of the following is analogous to mesosomes of bacteria?

    • Options
    • A. Mitochondria of eukaryotes
    • B. Golgi apparatus of eukaryotes
    • C. Lysosomes of eukaryotes
    • D. None of these
    • Discuss
    • 2. Swimming towards a chemical of bacteria is termed as

    • Options
    • A. positive chemotaxis
    • B. negative chemotaxis
    • C. phototaxis
    • D. magnetotaxis
    • Discuss
    • 3. The common word for bacteria which are helically curved rods is

    • Options
    • A. cooci
    • B. pleomorphic
    • C. bacillus
    • D. spirilla
    • Discuss
    • 4. The structure responsible for motility of bacteria is

    • Options
    • A. pilli
    • B. flagella
    • C. sheath
    • D. capsules
    • Discuss
    • 5. Microcapsules are composed of

    • Options
    • A. proteins
    • B. polysaccharides
    • C. lipids
    • D. all of these
    • Discuss
    • 6. Peptidoglycan is found only in the bacterial

    • Options
    • A. cell membrane
    • B. glycocalyx
    • C. cell wall
    • D. spore
    • Discuss
    • 7. Which of the following is exposed on the outer surface of a gram-negative bacterium?

    • Options
    • A. O-antigen of lipopolysaccharide (LPS)
    • B. Polysaccharide portion of lipoteichoic acid (LTA)
    • C. Braun lipoprotein
    • D. Electron transport system components
    • Discuss
    • 8. Cyanobacteria have

    • Options
    • A. a gram-positive cell wall
    • B. a gram-negative cell wall
    • C. Neither (a) nor (b)
    • D. No cell wall
    • Discuss
    • 9. Which of the following has Chinese letter arrangement?

    • Options
    • A. Bacillus anthracis
    • B. Mycobacterium tuberculosis
    • C. Clostridium tetani
    • D. Corynebacterium diphtheriae
    • Discuss
    • 10. The other name for peptidoglycan is

    • Options
    • A. mucopeptide
    • B. murein
    • C. both (a) & (b)
    • D. none of these
    • Discuss


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