Which of the following diseases is NOT associated with Streptococcus pyogenes (GAS)?                 

In the Kirby-Bauer agar disk diffusion susceptibility test, a steady decrease in zone diameter of the penicillin disks obtained with the control organism may occur because:   the control organism strain is too old penicillin disks were not stored frozen pH of the agar is less than 7.2 Mueller-Hinton agar is too thick

A tech is working on a wond culture and identifies Staphylococcus aureus in the culture. When inputting the results in the laboratory information system (LIS), the tech accidently enters Staphylococcus epidermidis instead. How should the tech handle correcting this report? 

A substrate incorporated into media to demonstrate hydrogen sulfide production by certain bacteria is:   Ferrous ammonium sulfate Sodium thioglycollate Para-aminobenzoic acid Potassium phosphate

When isolated on TCBS agar, vibrio vulnificus colonies appear:   yellow with black centers red with black centers green transparent

Dark-field microscopy can be used to determine infection with:   Fusobacterium nucleatum   Nocardia asteroides Treponema pallidum   Clostridium difficile

The tech is working in microbiology and typically there is an automatic call list generated by the laboratory information system (LIS) for urgent microbiology alerts. The LIS is currently down for maintenance so the tech has to manually pull a list of urgent reports. Which of the following shoud the tech consider as an urgent result? 

The colonies of Escherichia coli have a peculiar metallic sheen when grown on:   eosin methylene blue agar  Hektoen-enteric agar MacConkey agar   brilliant-green agar

In the presence of polymorphonuclear leukocytes and pyogenic organisms, the cerebrospinal fluid sugar and protein are usually:   Glucose Decreased/ Protein increased Glucose increased/ Protein decreased Glucose Normal/Protein increased  Glucose decreased/Protein normal

The organism believed to be a cause of human peptic ulcer disease as well as the most frequent cause of gastritis is _____.   Salmonella typhimuridum              Yersinia enterocolitica Campylobacter jejuni                   Helicobacter pylori