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- (>1 ans) Which of the following bacteria can cause beta-hemolysis? group A streptococci S. pyogenes group B streptococci S. aureus pneumococciThis plate shows: Beta hemolysis Alpha Hemolysis Delta hemolysis Gamma hemolysisUsing this flow chart, a species that is alpha-hemolytic and catalase-negative is Streptococcus pyogenes Streptococcus pneumoniae Enterococcus faecalis
- lysozyme was purified through G50 beads. From your lab experience, you can determine that when going through these beads,Ovalbumin is eluted as [choose the best/specific answer]: None of the above VT Vo VsKlebsiella Pneumoniae produces a capsule: How does klebsiella pneumonia contribute to the virulence of the pathogen?The organism tested on Blood Agar (plate shown furthest to the left) is: a. Micrococccus luteus b. Staphylococcus aureus. c. Staphylococcus epidermidis You know because of which specific features of the hemolytic reaction
- You are working in a lab studying Streptococcus pyogenes as a cause of necrotizing fasciitiis. You have an overnight culture that you want to know the starting concentration of, so do a set of six 1:10 serial dilutions (putting 1 mL from the stock into a 9 mL blank), with tube #1 being 1:10, #2 is 1:100, etc. You plate 0.1 mL from tube 5 onto a blood agar plate and the next morning count 134 colonies. How many bacteria (measured in CFU/mL) were in the overnight culture flask? A. 1.34 x 10^4 CFU/mL B. 1.34 x 10^5 CFU/mL C. 1.34 x 10^6 CFU/mL D. 1.34 x 10^7 CFU/mL E. 1.34 x 10^8 CFU/mL F. cannot tell based on the data given - you'd need to know the volume of the original culture flask2. 3. 4 6. In this image, the bacteria in circles 1 and 4 is demonstrating: presence of catalase • presence of coagulase O absence of catalase O absence of coagulase presence of hydrogen peroxide absence of hydrogen peroxide presence of antibodies absence of antibodies IcstMr. Oliver arrived early for his blood draw one Monday morning. The medical assistant was running late that day, and seemed to be a bit distracted as the preparation for the blood draw. Mr. Oliver's physician had ordered a CBC (to be collected in a potassium EDTA tube) and a potassium level (to be collected in a green top heparinized tube) The MA completed the blood draw, and thanked Mr. Oliver for his time. The next day, the physician's office called Mr. Oliver and asked him to come in to have his potassium level rechecked, as it was elevated on the test from the day before. This was not an expected result, as usually Mr. Oliver's potassium level was decreased below the reference range. The specimen was drawn and checked on a STAT basis, and the result was in the low end of the reference range. The physician told Mr. Oliver that the previous result was elevated because of a laboratory error. 1. What are two sources of error that could cause the potassium result to be erroneously…
- Why is washing with Hank’s balanced salt solution with 0.5% antibiotic-antimycotic done for Splenocyte Preparation?Why the synergy test results demonstrated that Penicillin G and Gentamicin did not act synergistically against the Streptococcus group G strain? Reference: https://drive.google.com/file/d/1nphMwenA3HSR_BjX5bzwQNYM0qbuqDdh/view?usp=sharingWhy sheep blood added in blood agar preparation does not coagulate prior to its use?