Hpmt 356- Bacterial Action And Strategies

43 Questions | Total Attempts: 41

SettingsSettingsSettings
Please wait...
Hpmt 356- Bacterial Action And Strategies

Quiz based on PPP for 2nd lecture for Microbiology- Bacterial Action and Strategies


Questions and Answers
  • 1. 
    What are Chelating compounds/siderophores and why do bacteria need them?
  • 2. 
    What is the difference between a bacteriostatic and a bacteriocidal agent; why may coadministration be antagonistic; what are some factors influencing which one should be administered?
  • 3. 
    Why is multi-therapy effective?
  • 4. 
    Which of the following do not describe murein?
    • A. 

      found in the cytoplasm of gram positive bacteria

    • B. 

      Target for antibiotics

    • C. 

      Peptidoglycan

  • 5. 
    Which of the following is the bacterial cytoplasmic membrane not involved in?
    • A. 

      Get nutrients into cell

    • B. 

      Nascent proteins

    • C. 

      Active difussion

    • D. 

      Iron uptake

    • E. 

      Group translocation

  • 6. 
    Membrane bound, heme containing proteins that carry out electron transport, are important in cell respiration and facilitate oxidatve metabolism
    • A. 

      Transposons

    • B. 

      Permeases

    • C. 

      Nascent proteins

    • D. 

      Cytochromes

    • E. 

      Siderophores

  • 7. 
    Which of the following is not a way that bacteria increase their iron uptake
    • A. 

      By taking up their own form of iron

    • B. 

      Producing their own

    • C. 

      Having multiple siderophores

    • D. 

      Take iron from protein bound forms (HgB, transferrin, ceruloplasmin)

    • E. 

      Having multiple uptake systems

  • 8. 
    Which of the following would not lead to an increase in bacterial population
    • A. 

      Loss of competing microorganisms

    • B. 

      Plasmids from resistant bacteria

    • C. 

      Iron Deficiency Anemia

    • D. 

      Increase in iron levels

  • 9. 
    Developing protein that can be secreted or incorporated in the cell membrane
  • 10. 
    Nascent proteins are found in ____________ where they are protected from potentially dangerous agents
    • A. 

      Cytoplasm

    • B. 

      Vacuole

    • C. 

      Hydrophillic space

    • D. 

      Hydrophobic space

    • E. 

      DNA

  • 11. 
    Check all that apply-  Improves bacterial resistance
    • A. 

      Mutation

    • B. 

      Capsules

    • C. 

      DNA molecule/plasmid uptake

    • D. 

      Iron uptake

    • E. 

      Transposal elements

  • 12. 
    Which describes a Frimbrae
    • A. 

      Slimy outer coatings consisting of High Molecular Weight polysaccharides

    • B. 

      Long helical filaments used for motility

    • C. 

      Hair-like structures used for attachment to cells and other surfaces

    • D. 

      Proteinaceous appendages used to adhere to other cells and to host cells

  • 13. 
    A bacteria exhibiting negative chemotaxis, moving away from a stimulus would most like be found displaying
    • A. 

      A counterclockwise helical pitch

    • B. 

      Tumbling

    • C. 

      Movement of all flagella in the opposite direction of a stimulus

    • D. 

      Forming flagella bundles

    • E. 

      Sending out back up signals

  • 14. 
    Which does not describe flagella
    • A. 

      Long helical filaments

    • B. 

      Used for motility

    • C. 

      Peritrichous

    • D. 

      Used to adhere to surfaces

    • E. 

      Located at random points, or polar

  • 15. 
    Flagella aid in virulence and fimbrae aid in pathogenicity
    • A. 

      True

    • B. 

      False

  • 16. 
    Capsules are
    • A. 

      Long helical filaments used for motility

    • B. 

      Slimy outer coatings that aid in resisting phagocytosis

    • C. 

      Proteinaceous appendages used to adhere to one another and to host cells

    • D. 

      Hair like structures used for attachment to cells

  • 17. 
    Which does not describe pilli
    • A. 

      Plays a role in conjugation

    • B. 

      Shorter than flagella

    • C. 

      Proteinaceous appendages

    • D. 

      Cover bacterial surface

    • E. 

      Used for attachment to cells and other surfaces

  • 18. 
    Which describes the nutritional needs of all pathogens
    • A. 

      Chemosynthetic

    • B. 

      Photosynthetic

    • C. 

      Facultative anaerobe

    • D. 

      Strict aerobe

    • E. 

      Need preformed organic compounds

  • 19. 
    Which best describes a facultative anaerobe
    • A. 

      Carrys out fermentation

    • B. 

      Does not need oxygen to survive

    • C. 

      Carrys out respiration

    • D. 

      Can grow with or without oxygen

    • E. 

      Can grow in the presence of oxygen

  • 20. 
    In the presence of envrironmental substrates and enzymes, what wont bacteria do
    • A. 

      Grow faster

    • B. 

      Increase their production of enzymes and substrates to build a reserve surplus

    • C. 

      Use exogenous substances

    • D. 

      Discontinue production of endogenous substances

    • E. 

      Inhibit enzymatic activity in the presence of the corresponding substrate

  • 21. 
    Relaxes supercoils of Nucleoid through single stranded nicks
    • A. 

      DNA Gyrase

    • B. 

      Topoisomerase 1

    • C. 

      Siderophores

    • D. 

      Transposons

    • E. 

      Tapas

  • 22. 
    Concerning DNA Replication, which is not true
    • A. 

      Speed of DNA replication is dependent on the rate of cell growth

    • B. 

      Does not occur unless DNA unwinds

    • C. 

      Is aided by DNA Gyrase and Topoisomerase

    • D. 

      Starts at a point of origin and travels bidirectionally

    • E. 

      Multiple DNA replications can occur simultaneously

  • 23. 
    What is the principal biosynthetic activity of bacteria
    • A. 

      Replication

    • B. 

      Reproduction

    • C. 

      Protein synthesis

    • D. 

      Survival

    • E. 

      Self-defense

  • 24. 
    Which is the most influential in determining the amount of protein synthesis bacteria perform
    • A. 

      Rate of growth of bacteria

    • B. 

      Rate of protein synthesis

    • C. 

      Amount of topoisomerase

    • D. 

      Amount of ribosomes in the cell

  • 25. 
    Pieces of DNA that can move from 1 genetic element to another
Back to Top Back to top