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AAB MT Microbiology Test Questions And Answers
Typology: Exams
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Streptococcus is catalase _________ A Positive B Negative - correct answer ✅B After Gram staining, what color are gram-negative organisms? A Dark Blue B Light Blue C Pink D Purple - correct answer ✅C What may cause an excessively pink film when doing a Wright's stain of a peripheral blood smear? A A thick blood film B Inadequate washing C Low pH D overstaining - correct answer ✅C
Identify the false statment about the preparation of reticulocyte smears. A Reticulocyte smears are used to determine the number of white blood cells present in a sample B The dyes used can be ne methylene blue or brilliant cresyl blue C The staining technique is call supravital staining D You should let the stain and the cells react for 15 minutes before making the smear - correct answer ✅A In the H & E staining method, the cosin stains A connective tissue blue B cytoplams pink C microorganisms blue D nuclei pink - correct answer ✅B When a smear is to red, neutrophil granules look: A blue-red B brilliant red
A Hematoxylin and Eosin stain B Masson's trichrome stain C Reticular stain D Sudan stain - correct answer ✅B In the H & E staining method, nuclei stain which color? A Black B Greenish yellow C Purplish blue D Red - correct answer ✅C Which stain is used to stain lipids? A Gram's stain B H & E C Periodic Acid-Schiff D Sudan IV - correct answer ✅D
In gram staining gram-negative organisms are stained A Pink or red B Purple C Blue - correct answer ✅A In gram staining gram-positive organisms are stained A Pink or red B Purple C Blue - correct answer ✅B Low PH, inadequate staining time, degraded stains, and excessive washing call all result in A Blue film on slide B No affect on slide C Pink film on slide - correct answer ✅C Which stain can visualize reticular fibers?
D N sicca - correct answer ✅A A Neisseria species is isolated from a patient sample. A carbohydrate utilization test is performed and the results are as follows: Glucose + Maltose + Fructose - Sucrose - Lactose + Based on these results which Neisseria species is in the sample? A N gonorrhea B N lactamicus C N meningitidis D N sicca - correct answer ✅B
A Neisseria species is isolated from a patient sample. A carbohydrate utilization test is performed and the results are as follows: Glucose + Maltose + Fructose - Sucrose - Lactose - Based on these results which Neisseria species is in the sample? A N gonorrhea B N lactamicus C N meningitidis D N sicca - correct answer ✅C A Neisseria species is isolated from a patient sample. A carbohydrate utilization test is performed and the results are as follows: Glucose +
D Streptobacillus moniliformis - correct answer ✅D Which of the follow is a gram-negative, rod-shaped bacteria. A Bacillus mycoides B Escherichia coli C Neisseria meningitidis D Streptobacillus moniliformis - correct answer ✅D A child presents with nausea and diarrhea. The physician orders and O &P stool examination. The organism below is found in the stool. Which organism is in the image? A Cryptosporidium meleagridis B E Coli C Giardia duodenalis D Shigella dysenteriae - correct answer ✅C
A 29 year old women is admitted to the hospital with a fever. She is recently diagnosed with acute leukemia and finished a course of chemotherapy last week. You perform two blood cultures, a sputum culture, and a urine culture. You also obtain a chest x-ray. Or all these test, the only positive result is one blood culture, which grows a gram-positive bacillus. This bacillus is: A an indication that the patient has meningitis B most likely a contaminant C most likely an organism she acquired from the hands of a health care provider the last time she was in the hospital D the most likely cause of the fever. - correct answer ✅B A 50 year old inpatient develops a catheter-associated urinary tract infection while in the hospital. The urine culture grows >10, oxidase-positive gram-negative bacilli. What is the most like organism? A E coli B Enterococcus
exam reveals hepatomegaly. Which pathogen is the most likely cause? A Chlamydia pneumoniae B Chlamydia psittaci C Franciscella tularensis D Mycoplsma pneumonia - correct answer ✅B What animal is the vector for arboviruses? A Birds B Cats C Dogs D Insects - correct answer ✅D What causes Creutzfeldt-Jakob disease? A JC virus B Prions C Pumuula virus
D SV40 virus - correct answer ✅B Which organism causes syphilis? A Borrelia burgdorferi B Epstein-Barr virus C Plasmodium falciparum D Treponema pallidum - correct answer ✅D Which organism causes Lyme disease? A Borrelia burgdorferi B Epstein-Barr virus C Plasmodium falciparum D Treponema pallidum - correct answer ✅A Which organism causes mono, other illnesses but not syphilis? A Borrelia burgdorferi B Epstein-Barr virus
D Sheep blood and Chocolate - correct answer ✅C Which of these bacteria does NOT have a cell wall? A Archaebacteria B Eubacteria C Mycobacteria D Mycoplasm - correct answer ✅D The urease test determines whether an organism can A digest urease B produce urea C split urea into ammonia D transport urea into its cells - correct answer ✅C Corynebacterium diphtheria is a A gram-negative cocci B gram-negative rod
C gram-positive cocci D gram-positive rod - correct answer ✅B Which species of bacteria causes tuberculosis? A Corynebacterium B Lacyobacillus C Mycobacterium D Streptococcus - correct answer ✅C IMViC is a series of tests designed to differentiate member of which bacterial family? A Bacteroidaceae B Enterbacteriaceae C Porphyromondaceae D Rikenellaceae - correct answer ✅B
B Alpha-prime C Beta D Gamma - correct answer ✅C Which of these tests is used to differentiate between Staphylococcus and Streptococcus? A Catalase B Coagulase C Oxidase D Urase - correct answer ✅A The Grocott-Gomori stain is used widely as a screen for: A HIV B fungi C influenza D salmonella - correct answer ✅B
What is the indicator of sulfide production in triple sugar iron agar? A Carbon disulfide B Colistin sulfate C Methane thiol D Sodium thiosulfate - correct answer ✅D Thayer-Martin agar is used to culture and isolate which bacteria? A E coli B Neisseria C Staphylococcus D Streptococcus - correct answer ✅B The Ziehl-Neelsen stain is used to identify which type of bacteria? A Bacillus subtilis B H influenza C Mycobacterium D Streptococcus - correct answer ✅C
