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Home Microbiology Bacteria Morphology Comments

  • Question
  • Periplasm is


  • Options
  • A. the area between the inner and outer membranes of gram-negative bacteria
  • B. the area between the inner and outer membranes of Gram-positive bacteria
  • C. the interior portion of mitochondria
  • D. the area outside the cell membrane that is influenced by the polymers

  • Correct Answer
  • the area between the inner and outer membranes of gram-negative bacteria 


  • Bacteria Morphology problems


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    • 1. Which of the following is true about cell wall of gram-positive bacteria?

    • Options
    • A. It consists of multiple layers
    • B. It is thicker than that associated with gram-negative bacteria
    • C. It contains teichoic acids
    • D. All of these
    • Discuss
    • 2. Peptidoglycan is also known as

    • Options
    • A. N-acetyl muramic acid
    • B. murein mucopeptide
    • C. N acetylglucosamine
    • D. mesodiaminopimetic acid
    • Discuss
    • 3. The protein from which hook and filaments of flagella are composed of, is

    • Options
    • A. keratin
    • B. flagellin
    • C. gelatin
    • D. casein
    • Discuss
    • 4. A single polar flagella is known as

    • Options
    • A. monotrichous
    • B. lophotrichous
    • C. amphitrichous
    • D. none of these
    • Discuss
    • 5. The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as

    • Options
    • A. lipase
    • B. lysozyme
    • C. pectinase
    • D. peroxidase
    • Discuss
    • 6. Which of the following has peptidoglycan as a major constituent of cell wall?

    • Options
    • A. Gram-negative bacteria
    • B. Gram-positive bacteria
    • C. Fungi
    • D. None of these
    • Discuss
    • 7. Genetic system is located in the prokaryotes in

    • Options
    • A. nucleoid
    • B. chromatin
    • C. nuclear material
    • D. all of these
    • Discuss
    • 8. The cocci which forms a bunch and irregular pattern are

    • Options
    • A. Staphylococci
    • B. diplococci
    • C. Tetracocci
    • D. Streptococci
    • Discuss
    • 9. Which of the following bacteria dies quickly after drying?

    • Options
    • A. Treponema pallidium
    • B. Mycobacterium tuberculosis
    • C. Staphylococcus aureus
    • D. Pseudomonas aeruginosa
    • Discuss
    • 10. Pseudomonas aeruginosa forms a blue water soluble pigment called

    • Options
    • A. pyocyanin
    • B. chlororaphin
    • C. pyoverdin
    • D. ?-carotene
    • Discuss


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