PARA RECALLS

1. Which of the following bacterial isolates has b. NaOH c. HCL

the following reaction: d. Ethanol
 Negative in MAC 9. Which of the following parasite is found in
 Nonmotile the large intestine?
 Negative in nitrate a. A. lumbricoides
 No growth in BAP b. E. vermicularis
A. B. pertussis c. A. duodenale d. M. perstans
B. B. parapertussis C. B. bronchiseptica D. B. 10. What is the identity of a protozoan parasite
holmesii seen as trophozoite with ingested wbc?
2. This nematode is incapable of maturation a. E. histolytica
within the human host and migrate aimlessly b. E. ginigvalis
causing tissue damage and inflammation. c. T. tenax d. E. dispar
A. T. spiralis 11. What is the confirmatory test to differentiate
B. G. spinigerum E. histolytica and E. dispar? a. Molecular
C. D. caninum D. T. solium b. Permanent smear
3. Plasmodium species divide through A. binary c. Culture
fission d. Concentration technique
B. multiple fission 12. Which of the following has a mushroom like
C. budding odor?
D. parthenogenesis a. P. multocida
4. What is the specimen used for the detection b. P. aeruginosa
of active filarial infection? A. urine c. Proteus
B. blood d. Alkaligenes
C. stool D. swab 13. Which of the following organisms can be
5. A particular barangay was flooded for few eliminated when the niacin result is negative?
days. Infection with what organism will be most a. M. tuberculosis
common? b. M. leprae
A. E. coli c. M. bovis
B. Salmonella C. Syphilis d. M. xenopi
D. Chlamydia 14. Mycobacterium leprae is diagnosed
6. A low quantity of a parasite is expected to be through
found in stool specimen. What method is a. biopsy
preferred? b. clinical manifestation
A. Molecular method c. culture d. swab
B. Direct wet mount 15. Which of the following organisms has a
C. Staining method round elementary body, susceptible to
D. Concentration technique sulfonamides and has a glycogen containing
7. What is the traditional gold standard or inclusions?
confirmatory test for the identification of a. C. trachomatis
leptospira species? b. C. psittaci
A. Culture c. C. pneumoniae d. R. ricketsii
B. TPA-Abs 16. Herpes virus is transmitted through a.
C. Molecular technique aerosol
D. Microscopic Agglutination Test b. contact
8. What is the reagent for Sniff or whiff test c. blood
a. KOH d. stool
17. An appropriate specimen 25. Method used to investigate and identify the
A. Folley catheter tip for aerobic culture B. organism responsible for a particular food-
Rectal swab for gonorrhea poisoning outbreak.
C. Swab specimen for dermatophytes D. Urine A. Culture
for afb culture B. Staining
18. After the collection of nasopharyngeal C. Disk diffusion technique D. Phage typing
and/or throat swab for virus, what is the 26. The oocysts f this protozoan infects warm-
recommended medium where will you place blooded
the swab? animals has the following characteristic:
A. Dry sealed container B. Agar Plate  survive in the environment for several months
C. Saline to more
D. Agar broth than 1 year
19. A staphylococcal specie is found to be  resistant to disinfectants, freezing
resistant towards vancomycin, what is the best and dying
way to identify this specie?  killed by heating to 70oc
A. Sensitivity test Identify the most probable organism involved.
B. Chromogenic Agar A. Trichomonas tenax
C. Molecular Method B. Toxoplasma gondii
D. Staining C. Naegleria fowleri
20. What is the best protection to be used for D. Balamuthia mandrillaris
serious infections transmitted by aerosol 27. An organism with indole (-), urea (+) is
droplet? suggestive
A. Well fit mask and googles of _____.
B. N95 A. E. tarda
C. Gown and Gloves B. P. vulgaris C. S. typhi
D. Adequate handwashing D. P. mirabilis
21. An organism is seen with a round vacuolar 28. What is a test that identifies the presence
inclusion body, positive for glycogen inclusion, of drug resistant
and is sexually transmitted. TB?
a. C. trachomatis A. Microscopy B. Culture
b. legionella c. Bordetella spp. C. DNA-based D. Serology
d. Syphilis 29. Bacterial analysis for the suitability of milk
22. An outbreak of hepatitis A infection for drinking uses which of the following
occurred after a meal in a certain restaurant. indicators to be tested?
What is the most probable reason for this A. Staphylococcus
outbreak? B. Staph. aureus and fecal coliforms
B. Improper storage of food ingredients C. C. Taste and appearance
Failure to practice handwashing of the D. Staphylococcus spp. And coliforms
customers 30. When is the best time for the collection of
D. Not observing proper etiquettes when blood in active malarial infection?
sneezing A. Before the fever
23. What do you call when the scolex, B. At the height of the fever
proglottid, cyst are inside the daughter cyst? A. C. After the fever
Hydatid sand D. At night time while the patient is sleeping
B. Morula balls 31. In the semi-quantitative method of
C. Brood capsule susceptibility testing, the concentration of the
D. Egg packets antibiotic is higher at the _____.
24. A component of Chocolate Agar. A. edge
A. Lysed blood cells B. center
B. Rabbit plasma C. Chocolate C. middle third D. under surface
D. Sheep RBCs
32. What is the required minimum PPE inside A. Streptomycs somaliensis B. Nocardia
the laboratory? asteroids
A. Face shield B. safety glasses C. Lab coat C. Actinomadura madurae D. Nocardia caviae
D. Gloves 39. The result of blood smear from EDTA tube
33. What Gram positive organism cause of a patient is a follows:
antibiotic-associated diarrhea that is seen as * Crescent-shape gametocytes,
yellow ground-glass colonies on cycloserine * Presence of all size of red blood cells *
cefoxitin fructose agar? Maurer’s dots
A. Clostridium tetani * multiplke delicate ring with two (2)
B. Closrtridium difficile chromatin dots in red cells
C. Clostridium perfringens D. Clostridium What is the most likely organism identified? A.
botulinum Plasmodium vivax
34. Which is an error during the pre-analytic B. plasmodium falciparum
phase of testing? C. plasmodium knowlesi
A. Undetected failure in quality control B. D. plasmodium ovale
Instrument malfunction 40. Protozoan trophozoites may be destroyed
C. Contamination from infusion route when processing stool specimen using _____
D. Specimen interference technique
35. In which of the following are yeasts BEST A. culture
utilized? B. concentration
A. Food production C. viral isolation
B. Manufacture of drugs and medicines C. D. direct microscope
Ethanol production 41. To what type of stool specimen will you find
D. Breakdown of organic materials both trophozoites and cysts?
36. Which is CORRECT sequence of the Gram A. Watery B. Solid C. Soft D. Hard
staining procedure? 42. Which special media is used for growing
A. crystal violet, safranin, iodine, alcohol B. organisms that need low oxygen content,
crystal violet, alcohol, iodine, safranin C. crystal reduced oxidation reduction protential and
violet, iodine, alcohol, safranin D. crystal violet, extra nutrients?
iodine, safranin, alcohol A. Alkaline Peptone Water
37. In the surgical treatment of echinococcosis, B. Lowenstein-Jensen medium C.
a scolicidal agent like _____ is injected in to Thiogycollate broth
the cyst/s to sterilize the area prior to remove D. Pseudosel agar
of the cysts. 43. The drug of choice for treatment of
A. acetone Paragonimus infection is _____.
B. KOH A. Praziquantel
C. 10% formaline D. india ink B. Thaibendazole C. Albenazole
38. An oncology nurse from YYY General D. Ivermectin
Hospital collected bronchial washing specimen 44. Why is a second dengue infection worse
from a 70 year old female receiving than the first?
chemotherapy and sent directly to the A. Infection with other serotypes
laboratory. Microscopic examination revealed a B. Infection with related viruses C. Inadequate
gram positive, and partially colored acid fast treatment
organism. Biochemical tests showed the D. Inadequate immune response
following: 45. Which of the following is NOT used to
 negative: hydrolysis in casein, tyrosine, and describe the colony morphology of fungal
xanthine cultures?
 Positive: catalase A. Verrucose B. Rugose
What organism is most identifiable with the C. Umbonate D. Glaborous
foregoing
characteristic?
46. Determining an organism’s ability to liquefy 54. What is the container used for stool
_____, aids in the classification of the culture?
Enterobacteriaceae. A. Clean, Leak-proof container
A. Peptone B. Sterile, screw-cap container
B. mannitol C. Container with NSS solution
C. nutrient gelatin D. beef extract D. Anaerobic jar
47. How do you confirm an unconscious 55. Which is NOT a vector-borne viral
patient’s identity in the ward? disease?’
A. ask patient to state and spell his/ her name A. Respiratory syncitial Virus infection
and bith date B. Jap B encephalitis C. Dengue fever
B. Check bed number D. Chikungunya fever
C. Ask the nurse in charge 56. The first larval stage of a trematode which
D. Bar-coding technology is
48. Which of the following are foodborne- hatched from an egg, often ciliated and free-
parasitic infections? swimming is _____.
A. Hookworm infections A. rediae
B. Katayama’s disease B. cercaria
C. Fascioliasis and Fasciolopsis D. Filarial C. miracidium D. metacercaria
infections 57. Select the Biosafety level as described by
49. A flexible calcium alginate nasopharyngeal the following condition:
swab is the collection device of choice for  work is conducted in a standard laboratory
recovery of _____ from the nasopharynx. bench in a contained area
A. Corynebacterium diptheriae  use of PPE A. BSL – 1
B. Streptococcus pneumonia C. B. BSL – 4 C. BSL – 3 D. BSL – 2
staphylococcus aureus 58. Which organism is the cause of human
D. Bacteroides fragilis infection by ingestion of uncooked fish
50. The specimen to be collected for Epstein harbouring the infective larvae, residing in the
Barr Virus PCR amplification is _____. small intestine and which burrow into the
A. synovial fluid mucosa?
B. serum A. T. trichiura
C. whole blood in 5 mls. EDTA D. sputum B. E. vmicularis
51. During culture and sensitivity, after the C. S. stercoralis
addition of antibiotic disks, the Kirby-bauer D. C. philippinensis
demonstrates colonies inside the zone of 59. A urine specimen showed the following
inhibition. What is the most probable cause of culture and biochemical profile:
this?  swarming in agar plate
A. mixed culture  decompose urea
B. expired antibiotics C. agar too thick  deaminate phenylalanine to
D. too heavy inoculum phenylpyruvic acid
52. Which of the following is a preservative for What organism can most likely be identified? A.
stool specimens? Alcaligenes faecalis
A. KOH B. Shigella subgroup A
B. NaOH C. Klebsiella-Aerogenes spp.
C. SAF D. Proteus spp.
D. Tolouene 60. What is the unique morphological feature of
53. What concentration technique is Spirochetes?
recommended for large nematodes? A. Presence of sterols in the cell wall B. Motility
A. Zinc Floatation without flagella
B. Brine’s Floatation C. Lack of cell wall
C. Knott’s Concentration D. Lack of plasma membrane
D. Sedimentation techniques
61. All these aerobes have cell walls containing C. Standardized reporting of parasite
mycolic acid, EXCEPT: concentration
A. Nocardia D. Ensure proper storage of reagents and
B. Rhodococcus stains
C. Corynebacterium D. Streptomyces 69. Identify the organism belonging to the
62. The method that gives an antimicrobial a Enterobacteriacceae giving the following
concentration resulting in a 99.9% reduction in results:
CFU/ml compared with the organism *Lactose ( - )
concentration in the original inoculums is *K/A TSI *nonmotile at 35oC A. Edwardsiela
recorded as _____. B. Klebsiella
A. MBC C. Salmonella
B. MIB C. ESBL D. MIC D. Shigella
63. Which test can distinguish M. tubculosis 70. Which is the most common cestode in
from M.bovis where a positive test (canary humans with infection prevalence highest
yellow color) is given. among children and in warm climates with poor
A. Hydroxyamine B. Nitrate sanitation facilities?
C. Niacin A. Taenia solium
D. Nitrite B. Echinococcus granulosus C.
64. An organism capable of causing Diphyllobothrium latum D. Hymenolepis nana
opportunistic infections in humans but a usual 71. In the Formal Ether Sedimentation
pathogen of horses and related animals. Technique, the top layer consists of _____. A.
 MAC: NLF formalin
 Nitrate: Positive  Oxidase: Positive B. plug of debris
A. Acinetobacter baumanii C. ethyl acetate
B. Burkholderia mallei D. parasitic elements
C. Burkholderia pseudomallei 72. What is the color change of the methylene
D. Stenotrophomonas maltophila blue
65. What staining techniques is used to detect infused strip when an anaerobic environment
small protozoa missed by wet mount has been achieved in an anaerobic jar?
examination? A. Blue
A. Methyl red B. Colorless
B. Gram C. Green D. White
C. Pap Stain 73. What information about an organism is
D. Trichrome given when using PCR?
66. A patient tested for ASO titer. The result is B. Motility characteristic of bacterium C.
>200 unit.ml. What organism is the most Morphology of the bacterium
probable etiologic agents? D. type of energy metabolism the bacteria has
A. Mycobacterium spp. 74. Transmission of food-borne trematodes
B. Enterobacteriaceae spp. may be influenced by _____.
C. Streptococcus spp. A. sex
D. Staphylococcus ssp B. geography
67. All genera in the list given grow on 5% C. climate change D. age
sheep Blood Agar and Chocolate Agar but not 75. How is bacteria growth rate established?
in MAC, EXCEPT: A. count the number of colony forming units
A. Staphylococcus /ml
B. Erysipelothrix C. Gardnerella D. B. count the number of colonies in Petri dish C.
Lactobacillus Estimate reproductive ratio
68. Which is an activity during the pre- D. Use growth rate calculator
analytical phase of Parasitology testing? A. 76. In normal circumstances, fungal culture
Correct patient identification results are reported _____.
B. Use of control.
A. 0-5 colonies C. aperture
B. positive D. condenser
C. negative 84. What is the role of charcoal in liquid media
D. 0-1 colonies for blood culture?
77. A solution used or routine examination of A. Maintains survival of organisms in changing
stool environmental conditions
samples is _____. C. Prevents clotting of blood in agar
A. Phosphate buffered saline B. normal saline D. Maintains the appropriate colony counts in
C. haft normal saline urine culture
D. plain water 85. Which of the following does NOT apply to a
78. What type of infection mimics acute viral right result?
enteritis, bacillary dysentery. bacterial A. right reference data
poisoning and travelers diarrhea where the B. right patient
diarrehiec stools lack blood, mucus, and C. right specimen
cellular exudates? D. right price
A. Cryptosporidiosis 86. Which of the following is BEST for use on a
B. Giardiasis surface that may be contaminated with
C. Balantidiosis D. Sarcocysticosis Hepatitis B virus?
79. What test can identify an organism even A. Quaternary ammonium compound
after B. 70% alcohol C. soap
antibiotics have been given to a patient? A. D. Hypoclorites
Gram staining 87. Which organism grow at 44 or 44.5
B. PCR degrees C and ferment lactoe to produce acid
C. susceptibility and gas?
D. Electron microscope A. Amoeba
80. Curved Gram negative bacilli seen in a 35 B. Thermotolerant coliforms
years old patient with gastric ulcers. What can C. Streptococci
be used to cinfirm a possible GI tract infection? D. Bacteria of fecal origin
A. H2S test 88. Which organism has the ability to survive
B. culture the organism in agar harsh environment and is highly resistant to
C. Urease test heat and dessication? Its spores may be
D. PYR test effectively used as an agent of biological
81. What must done if a stool sample cannot warfare.
be submitted to the laboratory for immediate A. B. cereus
testing? B. B. anthracis
A. Add saline solution C. B. subtilis
B. Add ethyl alcohol D. Pseudomonas
C. Place the specimen in the freezer at 0 deg 89. Which of the following is the correct result
Celsius for E. coli using the methyl Red/Voges-
D. Refrigerate for no longer than 24 hrs. Proskauer test?
82. How is the result of H2S test interpreted A. MR +/ VP –
when there is no black precipitate formed? A. B. MR - /VP – C. MR + / VP + D. MR -/ VP +
Doubtful 90. Which of the following is the ultimate goal
B. Negative of the National External Quality Assurance
C. Indeterminate Scheme (NUQAS) for Parasitology?
D. Positive A. An unsatisfactory result is a basis for
83. A part of the compound microscope that discontinuing the testing.
gather and focuses light from the illuminator B. Validate the entire testing process
into the specimen being viewed is the _____. C. Validate performance characteristic of
A. iris diaphragm reagents
B. lens D. Verify accuracy and reliability of testing
91. Which is a nonmotile, non-spore- forming, C. Presence of juvenile larvae
obligate aerobe that often appears beaded or D. Evidence of molts
unstained using Gram stain but forms stable 98. How are head lice transmitted? A. Poor
mycolate complexes with arylmethane dyes? hygiene
A. Neisseria spp. B. Direct contact
B. Klebsiella peumoniae C. Sexual contact
C. M. tuberculosis D. contact with fomites
D. Strep.pneumoniae 99. What is the traditional diagnostic specimen
92. What selective and differential medium is to test for Chlamydia in males? A. Rectal
used to isolate Vibrio species? swabs
A. Thiosulfate citate bile salts agar B. urethral swabs
B. Campy blood agar C. serum
C. Cefsulodin-Irgasan-Novobiocin agar D. D. urine
Thioglycollate broth 100. Which is the most significant human liver
93. To ensure accurate diagnosis of viral fluke where infections can highly be associated
disease, it is imperative to collect specimen with development of cholangiocarcinoma?
during the _____ phase of the infection. A. Paragonimus westermanii
A. lag B. Clonorchis sinensis
B. acute C. Schistosoma haematobium D. Fasciolopsis
C. chronic buski
D. incubation
94. Which organism has the following
characteristics?
*quadrate scolex,
* no rostellum or hooklets
* 4 suckers
A. Hymenolepis nana
B. Dipylidium caninum
C. Diphyllobothrium latum D. Taenia saginata
95. Which of the following parasites causes a
food-borne parasitic zoonosis causing an acute
syndrome with cough, abdominal pain,
discomfort and low grade fever that may occur
2-15 days after infection. Long term infection
may mimic tuberculosis. Consumption of
shellfish specialty dishes are implicated in this
condition.
A. Ascaris lumbricodes
B. Schistosoma japonicum C. Entamoeba
histolytica
D. Paragonimus westermani
96. An organism capanle of growth in cold
environmentis a _____.
A. mesophile
B. thermophile
C. hyperthermophile
D. psychrophile
97. How is the presence of Strongloides
strecoralis confirmed in recent stool sample? A.
Presence of parasite debris
B. Evidence of body fragments of parasite