AAB MT Microbiology Review questions and answrs

The core (genome) of the HIV virion contains: A. DNA B. RNA C. Both RNA and DNA D. Neither RNA or DNA B. RNA What two glycoproteins are expressed on the surface of influenza A viruses and are used for subtyping of the viruses? A. Hemagglutinin and Neuraminidase B. Glycoprotein120 (gp120) and Protein 24 (p24) C. Glycoprotein 41 (gp41) and glycoprotein 120 (gp120) D. Neuraminidase and protein 24(p24) A. Hemagglutinin and Neuraminidase A tech is testing a sorbitol negative isolate for possible E.coli O157: H7 from MacConkey with sorbitol agar plate. The biochemical identification proves the organism is E.coli. Serological testing for the O157 somatic antigen is positive. Serological testing for the H7 flagellar antigen is negative. QC for all serological testing passed. What should the tech do next? A. Report out the organism as E.coli O157:H7 B. Repeat biochemical testing C. Repeat O157 serological testing D. Subculture the organism to motility medium for repeat H7 serological testing D. Subculture the organism to motility medium for repeat H7 serological testing The beta hemolysis seen around the opaque, flat, spreading colonies on a 5% BAP is helpful in differentiating Bacillus cereus (hemolytic) from Bacillus anthracis (not hemolytic). Each of the following characteristics is also helpful in differentiating these two species EXCEPT: A. Motility B. Hydrolysis of gelatin C. Lecithinase production D. Fermentation of salicin C. Lecithinase production All of the organisms below are known to cause gastroenteritis, EXCEPT: A. Moraxella catarrhalis B. Campylobacter jejuni C. Vibrio cholerae D. Aeromonas hydrophila A. Moraxella catarrhalis Which of these organisms is associated with the condition known as toxic shock syndrome? A. Clostridium difficile B. Staphylococcus aureus C. Enterococcus faecalis D. Micrococcus luteus B. Staphylococcus aureus You are processing a Level 1 specimen for culture when 2 other specimens arrive for processing, Sputum for sputum culture and Urine in a boric acid transport tube for urine culture. How would you handle the processing of these two new specimens? A. Stop processing the Level 1 specimen and process the sputum culture B. Place the sputum culture in the refrigerator, leave the urine at room temperature, and continue processing the Level 1 specimen C. Leave the sputum and urine specimens at room temperature and continue processing the Level 1 specimen D. Stop processing the Level 1 specimen and process the urine culture B. Place the sputum culture in the refrigerator, leave the urine at room temperature, and continue processing the Level 1 specimen.