Final Review Microbiology Lab

  1. The organism which is considered pathogenic if found in the throat is:

    D) Streptococcus pyogenes
  2. The most common organism found as normal flora of the skin is:

    B) Staphylcoccus epidermidis
  3. Several cases of bacterial meningitis occur in a college dorm. Neisseria meningitidis grows on culture. What is the most likely route of transmission?

    C) respiratory droplets
  4. All of the following bacteria produce a capsule with the exception of

    A) Staphyloccucs aureus
  5. Streptococcus agalactiae is the most common cause of:

    C) sepsis and menigitis in newborn
  6. Hemoptysis is a common sign of:

    B) Mycobacterium tuberculosis
  7. Leprosy is also referred to as:

    D) Hansen's disease
  8. Which species of Mycobacterium causes tuberculosis of the digestive tract from drinking unpasteurized milk from infected cows?

    C) M. bovis
  9. An AIDS patient has a reaction to PPD with a diameter of 5 mm. How would this test be interpreted?
    a) negative
    b) positive
    b) positive
  10. Which statement is not true of M. tuberculosis?

    C) a positive skin test always indicates active disease
  11. Which antibiotic group has the highest rate of allergic reactions?

    D) penicillin
  12. Kirby Bauer testing is useful for determining

    A) which antibiotic may be employed to treat an infection
  13. A patient is currently receiving ampicillin for an infection. The culture report comes back to the floor, and states that Staphylococcus aureus is in the culture site. The antibiotic sensitivity report will be available the next day. The antibiotic:
    a) will probably work and shouldn't be changed
    b) the doctor should be contacted immediately to change the antibiotic
    b) the doctor should be contacted immediately to change the antibiotic
  14. Vancomycin is used to treat infections caused by:

    B) Methicillin resistant Staph aureus
  15. Which of these bacteria are resistant to many antibiotics?

    C) Serratia and Pseudomonas
  16. Two bacteria are commonly seen together in acute necrotizing ulcerative gingivitis (ANUG), a serious periodontal disease. Fusobacterium or other anaerobic Gram negative rods are usually seen with the primary organism, which is:

    A) Treponema vincenti
  17. Peptostreptococcus are an anaerobic

    C) Streptococcus
  18. An intestinal normal flora bacteria that can overgrow and cause pseudomembranous colitis after antibiotics wipe out its competing flora is

    A) Clostridum difficile
  19. The physician suspects that his patient has diphtheria. Which of the following symptoms were observed?

    D) pseudomembrane covering the pharynx causing difficulty breathing
  20. A patient develops foul-smelling gaseous discharge following surgery for a perforated appendix. Culture of the discharge will most likely grow:

    D) Clostridium perfringens
  21. A chemical agent which halts bacterial growth but does not kill the cells would be termed:

    A) bacteriostatic
  22. Which of the following agents kills bacterial spores relatively quickly and is used in many hospitals?

    D) Ethylene Trioxide Chamber (ETO)
  23. This halogen class of agent is commonly used in the hospital as a skin antiseptic before starting an IV or drawing a blood culture.

    A) iodophor (Betadine)
  24. Commonly used antiseptics include all except:

    B) formalin
  25. Sporicidal soaks used for delicate instruments that cannot be autoclaved contain:

    A) glutaraldehyde
  26. Which of the following is the most common cause of urinary tract infections?

    A) E. coli
  27. Two food-borne pathogens commonly found in undercooked poultry are:

    C) Salmonella and Campylobacter
  28. This gram negative rod is a common water inhabitant often found among the flora of the intestinal tract. It has a green pigment, and commonly causes pneumonia in cystic fibrosis patients and infection in burn wounds.

    B) Pseudomonas
  29. This food-borne illness is so highly infective that as few as 10 ingested organisms can cause disease. It is commonly associated with seafood.

    C) Shigella species
  30. The lab tech is performing a colony count from a patient's midstream urine specimen. She used a .001 ml calibrated loop to inoculate the blood and EMB agar plates. She observes over 100 colonies on both the blood agar and the EMB agar. The report will read:

    B) >100,000 colonies/mL of a probable gram negative rod
Card Set
Final Review Microbiology Lab
lab final review