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Members of the Bacterial World quiz #3

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Terms in this set (24)

  • In what way are Bacteria and Archaea similar?

    Both are prokaryotic and lack a nucleus.

  • Bacterial endospores are not produced by which group?

    Endospores are not produced by cocci such as Streptococcus.

  • What characteristics are used to place an organism in the domain Bacteria?

    Unicellularity, prokaryotic cell structure, and peptidoglycan in the cell wall.

  • Which bacteria exhibit phototaxis?

    Photosynthetic bacteria such as cyanobacteria can exhibit phototaxis.

  • The target of penicillin in bacterial cells is:

    Penicillin targets the synthesis of peptidoglycan in the cell wall.

  • The target of lysozyme in bacterial cells is:

    Lysozyme targets the peptidoglycan in the bacterial cell wall.

  • What characterizes the domain Bacteria?

    Bacteria are unicellular prokaryotes with peptidoglycan cell walls.

  • Thermococcus litoralis and Thermus aquaticus are thermophilic bacteria that are:

    Adapted to high temperatures.

  • Microbes known as transient microbiota are:

    Microbes that temporarily reside on or in the body.

  • Which term is used to describe a cluster of visible bacteria of the same species on an agar plate?

    A colony.

  • Which is a bacterium usually found in the soil and water and on the skin of healthy people?

    Pseudomonas species are commonly found in these environments.

  • What disease can be caused by both bacterial and viral infections?

    Pneumonia can be caused by both bacteria and viruses.

  • What characteristic is common to both bacteria and viruses?

    Both can contain genetic material (DNA or RNA).

  • Which antimicrobial drug is synthetic?

    Sulfonamides are synthetic antimicrobial drugs.

  • The methanogens, producers of methane gas, require environments that:

    Are anaerobic (lack oxygen).

  • What feature distinguishes a bacterial cell from an animal cell?

    Presence of a cell wall containing peptidoglycan.

  • Resident flora of the intestines include:

    Bacteroides and Escherichia coli.

  • To date, most of our natural antibiotics have been found to be produced by members of what genus?

    Streptomyces.

  • Which group of bacteria is unusual in that they lack peptidoglycan in their cell walls?

    Mycoplasma species lack peptidoglycan.

  • Spirochetes are able to move due to:

    Axial filaments (endoflagella).

  • An oxidase detection test can be used to identify certain bacteria because they lack:

    Cytochrome c oxidase.

  • The microorganism that causes the vast majority of urinary tract infections is:

    Escherichia coli.

  • An irregular cluster of spherical bacterial cells is termed:

    Staphylococcus.

  • Neisseria meningitidis appears as:

    Pairs of kidney-shaped (diplococci) cells.