Micro-pathogenic Bacteria I

54 Questions | Attempts: 232
Share
Quiz Flashcard
SettingsSettings
Please wait...
  • 1/54 Questions

    Regarding growth properites on agar, beta hemolysis gets a clear area around colonies and alpha hemolysis gets a greenish coloring of agar around the colonies

    • True
    • False
Please wait...
About This Quiz

Quiz based on Micobiology Lecture - Pathogenic Bacteria I

Bacteria Quizzes & Trivia

Quiz Preview

  • 2. 

    Staphylococcal scalded skin syndrome (SSSS) causes sloughing of the skin in neonates is characterized by exfoliative exotoxins that cause separation of the layers of the skin

    • True

    • False

    Correct Answer
    A. True
  • 3. 

    Strep's enzymes help it to spread by breaking down large protein molecules that may hinder its spread

    • True

    • False

    Correct Answer
    A. True
  • 4. 

    Enterococci are unique from other streptococci because of their ability to resist bile and high salt concentrations in the intestines and are normal flora of the GI and GU tracts

    • True

    • False

    Correct Answer
    A. True
    Explanation
    they are Group D streptococci

    Rate this question:

  • 5. 

    Gram + Cocci in pairs or chains that are normally found on the skin and nasopharynx would most likely be

    • Streptococci

    • Enterococci

    • Legionella

    • Salmonella

    Correct Answer
    A. Streptococci
  • 6. 

    M protein and an Hyaluronic acid capsule help strep to be resistant to phagocytosis

    • True

    • False

    Correct Answer
    A. True
  • 7. 

    Enterobacteriaceae are divided into lactose fermenters (pink colonies on agar) and non lactose fermenters (clear colonies)

    • True

    • False

    Correct Answer
    A. True
  • 8. 

    Group B strep causes neonatal sepsis and meningitis, because of this pregnant mothers must be screened at 35-37 weeks into their pregnancy

    • True

    • False

    Correct Answer
    A. True
    Explanation
    if they are positive for strep then they are given antibiotics

    Rate this question:

  • 9. 

    Mycoplasma requires sterols for growth and lacks rigid cell wall ( no murein)

    • True

    • False

    Correct Answer
    A. True
  • 10. 

    Streptococcal pyrogenic exotoxins SPE-A, SPE-C stimulate the release of cytokines that can lead to sepsis, shock and multi organ failure  and SPE-A is responsible for Toxic shock syndrome

    • True

    • False

    Correct Answer
    A. True
  • 11. 

    MSCRAMMS allow bacteria to colonize skin and mucosal surfaces

    • True

    • False

    Correct Answer
    A. True
  • 12. 

    Which is not one of the 3 parts of Taxonomy

    • Classification

    • Nomenclature

    • Identification

    • Disausation

    Correct Answer
    A. Disausation
  • 13. 

    Which of the following is coagulase positive

    • S. saprophyticus

    • S. aureus

    • S. lugdenensis

    • S. epidermidis

    Correct Answer
    A. S. aureus
  • 14. 

    Strep can have asymptomatic carriers and transmission is facilitated when it colonizes the nose

    • True

    • False

    Correct Answer
    A. True
  • 15. 

    Acute pharyngitis, acute glomerulonephritis, and acute rheumatic fever are closely linked to

    • S. aureus

    • Group A Strep

    • None of the above

    Correct Answer
    A. Group A Strep
  • 16. 

    Staph infected patients that are also colonized by VRE should be treated with clindamycin or bactrim

    • True

    • False

    Correct Answer
    A. True
  • 17. 

    This gram negative rod causes gastritis, gastric ulcers and gastric cancer

    • Vibrio spp. (v.cholera)

    • Pseudomonas

    • Campylobacter jejuni

    • Helicobacter pylori

    Correct Answer
    A. Helicobacter pylori
  • 18. 

    Hemolytic pattern refers to the pattern strep cultures form on blood agar plates. Which hemolytic pattern results in a complete clearing?

    • Alpha hemolysis

    • Beta hemolysis

    • Gamma hemolysis

    Correct Answer
    A. Beta hemolysis
  • 19. 

    Small intracellular, rod shaped bacteria also obligate parasites, causes Rocky mountain Spotted Fever

    • Mycoplasma

    • Rickettsiae

    • C. trachomatis

    • Treponema pallidum

    Correct Answer
    A. Rickettsiae
  • 20. 

    Scarlet fever related to strep is because of

    • Pyrogenic exotoxins A,B,C

    • Hyaluronidase

    • M- protein

    Correct Answer
    A. Pyrogenic exotoxins A,B,C
  • 21. 

    Which of the following helps strep to spread

    • Proteases

    • Hyaluronidases

    • Streptokinases

    • All of the above

    Correct Answer
    A. All of the above
  • 22. 

    Which of these classification terms is the most specific

    • Kingdoms/domains

    • Phyla

    • Classes

    • Orders

    • Families

    • Genera

    • Strains

    Correct Answer
    A. Strains
  • 23. 

    This virulence factor is present in staph but not in strep and converts hydrogen peroxide to water

    • Coagulase

    • Hyaluronidase

    • PBP2a

    • Catalase

    Correct Answer
    A. Catalase
  • 24. 

    This gram negative rod can be normally found in the throat of healthy individuals and can cause pneumonia and meningitis

    • Helicobacter pylori

    • Legionella

    • Haemophilus spp.

    • Vibrio spp.

    Correct Answer
    A. Haemophilus spp.
  • 25. 

    The damage caused by staphylococci is due to host immune response and pathogen actions which best describes staphylococci's ability to cause damage

    • Forms abscesses due to collection of pus in skin or cellulitis in submucosal tissue

    • Bacteria kill neutrophils and the neutrophils release lysosymal enzymes that damage tissue

    • Pore forming toxins, hyaluronidase, beta lactamase and PBP2a

    • All of the above

    Correct Answer
    A. All of the above
  • 26. 

    Enterococci are problematic because they

    • Can be resistant to all classes of antibiotics

    • Can cause bacteremia, UTI and endocarditis

    • All of the above

    • None of the above

    Correct Answer
    A. All of the above
  • 27. 

    This gram negative rod causes whooping cough

    • Haemophilus spp

    • Bordatella spp.

    • Brucella

    • Legionellla

    Correct Answer
    A. Bordatella spp.
  • 28. 

    Virulence factor that converts fibrinogen to fibrin and blocks phagocytosis

    • Capsule

    • Catalase

    • Coagulase

    • Hyaluronidase

    Correct Answer
    A. Coagulase
    Explanation
    capsule only inhibits phagocytosis, coagulase is converts fibrinogen and blocks phagocytosis

    Rate this question:

  • 29. 

    Which best describes group b streptococci

    • Also called s. mutans and s. milleri

    • Normally found in gi tract and female genital tracts

    • Result in immune related disease

    • High morbidity and mortality in developing countries

    Correct Answer
    A. Normally found in gi tract and female genital tracts
  • 30. 

    What best describes Neisseria spp.

    • Gram negative cocci

    • Found in mouth and throat of healthy peopl

    • Pathogenic species include gonococcus and meningococcus

    • All the above

    Correct Answer
    A. All the above
  • 31. 

    A patient is admitted to the hospital  to receive an IV catheter, which of the following coagulase negative staph bacteria may complicate the procedure?

    • S. saprophyticus

    • S epidermidis

    • S. lugdenensis

    • S. aureus

    Correct Answer
    A. S epidermidis
  • 32. 

    Strep bacteria must secrete hyaluronidase to digest their capsule prior to binding to epithelium

    • True

    • False

    Correct Answer
    A. True
  • 33. 

    Group A Strep cannot penetrate intact skin

    • True

    • False

    Correct Answer
    A. True
  • 34. 

    Small intracellular bacteria, no growth on artificial media, causes STD or Pneumonia in young adults

    • C. trachomatis, C. pneumonia

    • Treponema paliddum

    • Mycoplasma and leptospira

    • Mycobacterium and borrelia

    Correct Answer
    A. C. trachomatis, C. pneumonia
  • 35. 

    This coagulase negative staphylococci causes urinary tract infections and cystitis

    • S. aureus

    • S. saprophyticus

    • S. lugdenensis

    • S. epidermidis

    Correct Answer
    A. S. saprophyticus
  • 36. 

    Which statement about gram positive rods is true

    • Listeria sp. causes anthrax

    • Clostridium spp. produce endotoxins causing gas gangrene, tetany, diarrhea

    • Includes clostridum, listeria, bacillus anthracis and pseudomonas

    • Bacillus anthracis affects infants and pregnant women

    Correct Answer
    A. Clostridium spp. produce endotoxins causing gas gangrene, tetany, diarrhea
    Explanation
    listeria sp. affects infants and pregnant women; bacillus anthracis causes anthrax

    Rate this question:

  • 37. 

    Virulence factor responsible for the break down of the matrix of connective tissue and allows staphylococcus to cause bone and joint infections

    • Capsule

    • PBP2a

    • Hyaluronidase

    • B-Lactamases

    • Pore forming toxins

    Correct Answer
    A. Hyaluronidase
  • 38. 

    Which of the following determines strep's hemolytic pattern on blood agar

    • Streptolysin o

    • Streptolysin s

    • Serotype a-e

    • A and B

    Correct Answer
    A. A and B
  • 39. 

    Regarding acid fast bacteria, which is not true?

    • Includes mycobacterium, actinomycetes

    • Includes treponema pallidum, borrelia spp. and leptospira

    • Cause granulomas in lungs and tissue infections

    • Can cause pneumonia

    Correct Answer
    A. Includes treponema pallidum, borrelia spp. and leptospira
    Explanation
    spirochetes includes treponema pallidum, borrelia spp. and leptospira

    Rate this question:

  • 40. 

    Acute rheumatic fever and acute post streptococcal glomerulonephritis both

    • Appear as sequelae to strep infection 1-4 weeks after infection

    • Can be treated with antibiotics

    • Cause carditis, poly arthritis, chorea, nodules and erythema marginatum

    • None of the above

    Correct Answer
    A. Appear as sequelae to strep infection 1-4 weeks after infection
  • 41. 

    Regarding spirochetes, which statement is false

    • Are spherical shaped bacteria

    • Treponema pallidum causes syphilis

    • Borrelia spp. cause lyme disease and B. recurrentis causes relapsing fever

    • Leptospira causes hemorragic fever

    Correct Answer
    A. Are spherical shaped bacteria
    Explanation
    spirochetes are helical shaped

    Rate this question:

  • 42. 

    Viridans streptococci include

    • Alpha and gamma hemolytic strep

    • Beta and gamma hemolytic streo

    • Alpha and beta hemolytic strep

    • None of the above

    Correct Answer
    A. Alpha and gamma hemolytic strep
  • 43. 

    Group A Strep  is linked to all of the following except

    • Stays localized to site of infection

    • Immune related disease

    • High morbidity and mortality in developing countries

    • Extracellular proteins that cause extensive tissue damage

    Correct Answer
    A. Stays localized to site of infection
    Explanation
    strep spreads from the local site of infection

    Rate this question:

  • 44. 

    This gram negative rod causes cat scratch fever

    • Brucella

    • Haemophilus spp

    • Bordatella spp:

    • Bartonella

    Correct Answer
    A. Bartonella
  • 45. 

    Virulence factor that causes damage to cells and interferes with homeostasis

    • Catalase

    • PBP2a

    • Hyaluronidase

    • Pore forming toxins

    Correct Answer
    A. Pore forming toxins
  • 46. 

    If strep is able to penetrate the deeper layers of skin it is most likely to cause

    • Erypiselas and cellulitis

    • Impetigo

    • Peritonsillar abscess

    • None of the above

    Correct Answer
    A. Erypiselas and cellulitis
  • 47. 

    Which is not true about Streptococci

    • Carry out respirations and most pathogenic species grow in air

    • Oxygen tolerant anaerobes

    • Main pathogens are the beta hemolytic streptococci

    • Have proteins that aid in virulence

    • Grow in pairs or chains

    Correct Answer
    A. Carry out respirations and most pathogenic species grow in air
    Explanation
    carry out fermentation not respiration, but most pathogenic species grow in air

    Rate this question:

  • 48. 

    This gram negative rod causes infectious diarrhea

    • Vibrio spp.

    • Pseudomonas

    • Campylobacter jejuni

    • Helicobacter pylori

    Correct Answer
    A. Campylobacter jejuni
  • 49. 

    M protein is responsible for all of the following except

    • Mucoid appearance of strep on blood agar

    • Immune related disease resulting from mimicking human proteins

    • Adhere to keratinocytes

    • Prevents opsonization by complement

    Correct Answer
    A. Mucoid appearance of strep on blood agar
    Explanation
    mucoid appearance is due to strep's capsule

    Rate this question:

Quiz Review Timeline (Updated): Mar 16, 2022 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 16, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 08, 2010
    Quiz Created by
    Chinedua
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.