MCQ Questions
Q.1.
The enzyme _____, that is found in tears and saliva, can hydrolyze the bonds in the glycan chains of certain bacterial cell walls.
  • 0%
    inclusions.
  • 0%
    envelope
  • 0%
    lysozyme
  • 0%
    Bergey's
Q.2.
The function of bacterial endospores is
  • 0%
    is part of the nucleoid.
  • 0%
    protein synthesis would stop.
  • 0%
    protection of genetic material during harsh conditions.
  • 0%
    thermoplasmas - adapted to frozen environments
Q.3.
Cells form a _____ arrangement when cells in a chain snap back upon each other, forming a row of cells oriented side by side.
  • 0%
    lysozyme
  • 0%
    endospore
  • 0%
    halophile.
  • 0%
    palisade
Q.4.
Which order below reflects the correct procedure for Gram staining?
  • 0%
    Its DNA is wrapped around histones.
  • 0%
    found in acid-fast bacterial cell walls
  • 0%
    Gram-positive bacteria have an outer membrane.
  • 0%
    crystal violet, iodine, alcohol/acetone, safranin
Q.5.
Gram-negative organisms
  • 0%
    have a more complex wall with a greater variation in chemical composition.
  • 0%
    All of the choices are correct.
  • 0%
    move in response to a chemical.
  • 0%
    thermoplasmas - adapted to frozen environments
Q.6.
The site/s for most ATP synthesis in prokaryotic cells is/are the
  • 0%
    cell walls.
  • 0%
    rRNA sequence
  • 0%
    cell membrane.
  • 0%
    lophotrichous.
Q.7.
Lipopolysaccharide is an important cell wall component of
  • 0%
    gram-positive organisms.
  • 0%
    gram-negative bacteria.
  • 0%
    attachment and motility.
  • 0%
    Treponema pallidum.
Q.8.
The most immediate result of destruction of a cell's ribosomes would be
  • 0%
    protein synthesis would stop.
  • 0%
    attachment and motility.
  • 0%
    is part of the nucleoid.
  • 0%
    peritrichous
Q.9.
Which of the following species of bacteria is not closely related to the others?
  • 0%
    Escherichia coli
  • 0%
    peritrichous
  • 0%
    fimbrae; capsules
  • 0%
    Tenericutes - waxy, acid-fast cell walls
Q.10.
Halobacterium salinarium lives in and requires salt to grow. This is an example of an archaebacterium described as a/n
  • 0%
    flagella.
  • 0%
    palisade
  • 0%
    halophile.
  • 0%
    gram-positive.
Q.11.
The bacterial chromosome
  • 0%
    Mycobacterium.
  • 0%
    All of the choices are correct.
  • 0%
    is part of the nucleoid.
  • 0%
    protein synthesis would stop.
Q.12.
Movement of a cell toward OR away from a chemical stimulus is termed:
  • 0%
    cell wall.
  • 0%
    cell membrane.
  • 0%
    crystal violet, iodine, alcohol/acetone, safranin
  • 0%
    chemotaxis.
Q.13.
A prokaryotic cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is
  • 0%
    Mycobacterium.
  • 0%
    lophotrichous.
  • 0%
    gram-negative bacteria.
  • 0%
    gram-positive.
Q.14.
A bacterial genus that has waxy mycolic acid in the cell walls is
  • 0%
    Mycobacterium.
  • 0%
    Bacillus.
  • 0%
    flagella.
  • 0%
    cilia.
Q.15.
The chemical components of ribosomes are proteins and
  • 0%
    rRNA.
  • 0%
    tetrad
  • 0%
    rRNA sequence
  • 0%
    fimbriae.
Q.16.
The term that refers to flagella at both poles is
  • 0%
    staphylococcus
  • 0%
    cell membrane.
  • 0%
    amphitrichous.
  • 0%
    peritrichous
Q.17.
The difference in cell wall structure of Mycobacterium and Nocardia compared to the typical gram-positive bacterial cell wall structure is
  • 0%
    predominance of unique, waxy lipids.
  • 0%
    Gram-positive bacteria have an outer membrane.
  • 0%
    protection of genetic material during harsh conditions.
  • 0%
    periplasmic flagella (axial filaments).
Q.18.
Chemical analysis of a bacterial cell structure detects calcium dipicolinic acid. What is the identity of this structure?
  • 0%
    fimbriae.
  • 0%
    gram-positive.
  • 0%
    endospore
  • 0%
    palisade
Q.19.
Which of the following does not pertain to endotoxins?
  • 0%
    Tenericutes - waxy, acid-fast cell walls
  • 0%
    found in acid-fast bacterial cell walls
  • 0%
    Escherichia coli
  • 0%
    Its DNA is wrapped around histones.
Q.20.
Serological analysis for bacterial identification typically involves using
  • 0%
    specific antibodies to the bacterial cell antigens.
  • 0%
    thermoplasmas - adapted to frozen environments
  • 0%
    protection of genetic material during harsh conditions.
  • 0%
    Gram-positive bacteria have an outer membrane.
Q.21.
The transfer of genes during bacterial conjugation involves rigid, tubular appendages called
  • 0%
    cell wall.
  • 0%
    sex pili.
  • 0%
    fimbriae.
  • 0%
    halophile.
Q.22.
__ Manual of Systematic Bacteriology is a manual of bacterial descriptions and classifications.
  • 0%
    Bergey's
  • 0%
    lysozyme
  • 0%
    flagella.
  • 0%
    acid-fast
Q.23.
The two functions of bacterial appendages are
  • 0%
    gram-negative bacteria.
  • 0%
    attachment and motility.
  • 0%
    protection of genetic material during harsh conditions.
  • 0%
    cell membrane.
Q.24.
Magnetosomes are
  • 0%
    periplasmic flagella (axial filaments).
  • 0%
    composed of magnetic iron oxide particles.
  • 0%
    protection of genetic material during harsh conditions.
  • 0%
    Gram-positive bacteria have an outer membrane.
Q.25.
Endospores are
  • 0%
    composed of magnetic iron oxide particles.
  • 0%
    All of the choices are correct.
  • 0%
    is part of the nucleoid.
  • 0%
    nitrogen base sequence of rRNA.
Q.26.
Which term is not used to describe bacterial cell shapes?
  • 0%
    cell wall.
  • 0%
    cilia.
  • 0%
    tetrad
  • 0%
    peritrichous
Q.27.
Bacterial endospores are produced by
  • 0%
    streptobacillus.
  • 0%
    Bacillus.
  • 0%
    cell walls.
  • 0%
    flagella.
Q.28.
Two major structures that allow bacteria to adhere to surfaces are ___ and ___.
  • 0%
    fimbriae.
  • 0%
    peritrichous
  • 0%
    cell membrane.
  • 0%
    fimbrae; capsules
Q.29.
The short, numerous appendages used by some bacterial cells for adhering to surfaces are called
  • 0%
    fimbriae.
  • 0%
    envelope
  • 0%
    sex pili.
  • 0%
    halophile.
Q.30.
_ is a macromolecule containing alternating N-acetylglucosamine and N-acetylmuramic acid cross-linked by short peptide fragments.
  • 0%
    cell wall.
  • 0%
    gram-positive.
  • 0%
    endospore
  • 0%
    Peptidoglycan
Q.31.
A chain of rod-shaped cells would be called a
  • 0%
    fimbrae; capsules
  • 0%
    Bacillus.
  • 0%
    Mycobacterium.
  • 0%
    streptobacillus.
Q.32.
The outcome of the Gram stain is based on differences in the cell's
  • 0%
    cell walls.
  • 0%
    acid-fast
  • 0%
    fimbriae.
  • 0%
    cell wall.
Q.33.
The _____ stain is used to stain and differentiate Mycobacterium and Nocardia from other bacteria.
  • 0%
    fimbriae.
  • 0%
    sex pili.
  • 0%
    endospore
  • 0%
    acid-fast
Q.34.
Syphilis is caused by a spirochete called
  • 0%
    streptobacillus.
  • 0%
    Treponema pallidum.
  • 0%
    gram-positive organisms.
  • 0%
    Mycoplasma pneumoniae.
Q.35.
During the Gram stain, gram-_____ cells decolorize when the alcohol is applied.
  • 0%
    tetrad
  • 0%
    inclusions.
  • 0%
    fimbriae.
  • 0%
    negative
Q.36.
The term that refers to the presence of flagella all over the cell surface is
  • 0%
    cell membrane.
  • 0%
    amphitrichous.
  • 0%
    peritrichous
  • 0%
    sex pili.
Q.37.
The basal body of a flagellum is anchored into the
  • 0%
    cell walls.
  • 0%
    Mycobacterium.
  • 0%
    flagella.
  • 0%
    cell membrane.
Q.38.
An irregular cluster of spherical cells is termed:
  • 0%
    lophotrichous.
  • 0%
    streptobacillus.
  • 0%
    Mycobacterium.
  • 0%
    staphylococcus
Q.39.
The cell _____ can be composed of three layers: the cell membrane, the cell wall, and the outer membrane.
  • 0%
    envelope
  • 0%
    endospore
  • 0%
    lysozyme
  • 0%
    Bergey's
Q.40.
Peptidoglycan is a unique macromolecule found in bacterial
  • 0%
    flagella.
  • 0%
    cell walls.
  • 0%
    cell membrane.
  • 0%
    cell wall.
Q.41.
The prokaryotic flagellum has three parts in the order from cytoplasm to external environment. They are
  • 0%
    acid-fast
  • 0%
    basal body, hook, and filament.
  • 0%
    protein synthesis would stop.
  • 0%
    nitrogen base sequence of rRNA.
Q.42.
At present, the most accurate indicator of evolutionary relatedness among organisms is to determine the
  • 0%
    nitrogen base sequence of rRNA.
  • 0%
    protein synthesis would stop.
  • 0%
    Its DNA is wrapped around histones.
  • 0%
    move in response to a chemical.