Multiple Choice Questions

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

Multiple Choice Questions
Answered Not Answered Not Visited Correct : 0 Incorrect : 0