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CLS Microbiology
ASCP exam
| Question | Answer |
|---|---|
| H.influnzae becomes resistant to ampicillin when it produces | Beta-lactamase |
| Children who have infection with beta- hemolytic Strep can develop? | Acute glomerulonephritis |
| Thioglycollate broth is stored at RT & in the dark cuz? | there is a decrease absorption of O2 by medium |
| a liquid fecal specimen from 3 months infant required a routine test for Salmonella, Shegella as well as....? | presence of Campylobacter sp |
| Unusual # of MRSA were isolated in lab in the past month that most likely to.... | deterioration of the methicillin disks |
| gram-stained sputum smear revealed 25-50 SEC & 10 PMN leukocytes/100x field,as well as many lancet-shaped,G-pos cocci;many G-neg rods and many G-Pos in pairs, clump and long chain, technologist should ? | call nursing station and request a new specimen |
| which one of specimen requests is acceptable? | feces for anaerobic culture( no)/ Foley catheter tip for aerobic culture(no)/ rectal swab for direct smear for gonococci( no)/ urine for culture of acid-fast bacilli( YES) |
| A gram Pos coccus isolated from blood with the following; Optochin- Neg/ Bacitracin- Neg/ Bile esculin hydrolysis-Neg/ Hippurate Hydrolysis-POS/ catalase- Neg | S.agalactiae ( grp B) |
| Gram Neg rod was isolated from wound infection cuased by cat pet bite.... | Pasteurella multocida |
| 10 years old boy admitted with appendicitis. during surgery the appendix appeared normal, enlarged node were cultured, small gram neg rod isolated from RT plate the organism? | Yersinia enterocolitica |
| most often to prepare slide from dermatophyte plate culture for microscopic exam? | lactophenol cotton blue |
| the function of N-acetyl-L-cysteine required in NALC-NaOH reagent for acid-fast digestion-decontamination procedures is to | liquify the mucus |
| middlebrook 7H10 and 7H11 media must be refrigerated in the dark and incubated in the dark as well. if not, prove of mycobacterial toxin mistaken cuz of | formaldehye may be produced |
| Ureaplasma urealyticum is difficult to grow in routine media cuz of requirement of.. | Sterols |
| to recover a cyst stage from formed fecal sample for parasite, specimen should be | stored at refrigerator temp- |
| the stock cultures needed for quality control testing of DNAse production | Serratia marcescns/ E.coli |
| the stock cultures needed for quality control testing of Deamination activity are, | Proteus mirabilis/ E.coli |
| the stock cultures needed for quality control testing of Oxidase production | Pseudomonas aeruhinosa/ E.coli |
| the stock cultures needed for quality control testing of Motility are, | klebsiella pneumonia/ E.coli |
| an antibiotic that inhibits cell wall synthesis is.. | penicillin |
| Group B, beta-hemolytic Strep may be distinguished from other hemolytic Strep by.. | Coagglitination |
| plus of its growth on modified thayer-martin medium, Neisseria GONORRHOEA can be confirmed if.. | oxidase Pos, Glucose Pos and Maltose Neg |
| organism that may be mistaken with N.gonorrhoea in Gram stain of Uterine cervix is | Moraxella osloensis |
| Coagglutination is associated with, | N.gonorrhoea |
| Chocolate agar base containing Vancomycin, Colistin, Nystatin and trimethoprim is also known as; | modified Thayer-Martin agar |
| sodium bicarbonate and sodium citrate are components of | JEMBEC System |
| clinical resistance to penicillin dosage related of production of beta-lactamase by | N.gonorrhoea |
| to date, the organism that considered universally susceptible to penicillin | S.pyogenes |
| the media that routinely used for Campylobacter jejuni? | skirrow's medium |
| one feature of Campylobacter jejuni is that | optimal growth at 42 Celsius |
| this organism must be incubated in microaerophilic environment for optimal recovery is | Campylobacter fetus |
| the recovery cryptococcus sp may be compromised if the isolation media coantains | Cycloheximide |
| one distinguished character of Cryptococcus neoformans is | Positive Niger seed agar test |
| a cell line that used to recover Chlamydia trachomatis is | McCoy's cell line |
| an autopsy performed on an 8-years old revealed Waterhouse-Friderichsen Syndrom. blood and throat cultures taken prior to death were positive to what organism? | N.meningitidis |
| relapsing fever in humans is caused by? | Borrelia recurrentis |
Created by:
azaeri
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