BOC Practice Exam Questions With
Verified Answers
Which of the following is a dimorphic fungus? - answerblastomyces dermatidis
N 3% L 62% Monos 23% Eos 12% - answerFungal Meningitis
-elevated EOS indicate fungal infection
Branching AFP from BAL in 63 yo woman on chemo; does NOT hydrolyze casei...
EXAM STUDY MATERIALS July 23, 2024 4:26 PM BOC Practice Exam Questions With Verified Answers Which of the following is a dimorph ic fungus? - answer✔✔blastomyces dermatidis N 3% L 62% Monos 23% Eos 12% - answer✔✔Fungal Meningitis -elevated EOS indicate fungal infection Branching AFP from BAL in 63 yo woman on chemo; does NOT hydrolyze casein, tyrosine or xanthine - answer✔✔Nocardi a Electrode Ag/AgCl anode and Platinum wire cathode in KCl - what does this probe measure? - answer✔✔pO2 AABB minimum Hgb level for AUTOLOGOUS donation - answer✔✔11.0 g/dL Drug - induced hemolytic anemia - answer✔✔(+)DAT (+) Antibody screen recommended initial thyroid test for healthy pt, asymptomatic pt or symptomatic pt relating to thyroid - answer✔✔TSH which Lutheran antibody is most likely to be IgM an detected by direct agglutinin - answer✔✔Lua -other Lutheran Abs are IgG establishing p athogenicity of C. diptheriae depends on - answer✔✔positive toxigenicity test which are associated with megaloblastic anemias - answer✔✔neutropenia and thrombocytopenia thalassemias are characterized by - answer✔✔decreased rate of globulin synthesis which of the following the most common HUMORAL deficiency disease - answer✔✔selective IgA deficiency -most common immunodeficiency EXAM STUDY MATERIALS July 23, 2024 4:26 PM in bilirubin determinations, the purpose of adding caffeine or methyl alcohol is to - answer✔✔allow indirect bilirubin to react wit h color reagent -principle of diazo reaction with unconjugated bilirubin which area of the histogram for the automated hematology analyzer represents platelet distribution curve? - answer✔✔area e which of the following is a true statement for megakaryocy tes in a bone marrow aspirate? - answer✔✔an average of 2 -10 should be found in each lpf gamma -hemolytic streptococci that blacken bile -esculin agar but do not grow at 6.5% NaCl - answer✔✔group D strep -strep bovis What increment of platelets/uL in the ty pical 70 -kg human is expected to result from each single unit of platelets transfused to a non -HLA sensitized recipient? a. 3,000,5,000 b. 5,000 - 10,000 c. 20,000 - 25,000 d. 25,000 - 30.000 - - answer✔✔5,000 -10,000 LD5>LD2>LD1LLD3>LD4 which is the most l ikely interpretation of the isoenzyme patterns? - answer✔✔viral hepatitis -The LD isoenzymes as a percentage of total LD activity are LD1: 14 - 26%, LD2: 29 - 39%, LD3: 20 - 26%, LD4: 8 - 16% and LD5: 6 - 16%. LD5 in scan is increased -> indicative of viral hepatitis best method for ionized calcium - answer✔✔ISE detects change in potential when Ca2+ binds reversibly to the membrane in electrophoretic analysis, buffers - answer✔✔act as a carrier for ions -3 roles of buffer EXAM STUDY MATERIALS July 23, 2024 4:26 PM carry current establish pH determine electrical charge on the solute the two factors that differentiate liver disease from vitamin k deficiency are - answer✔✔V and VII -VII = vit k dependent -V = not vitk dependent and will not be decreased with vitamin k deficiency -both will be decreased with liver disease because all factor are made in the liver The finding of a large amount of uric acid crystals in a urine specimen from a 6 month old boy: - answer✔✔could indicate Lesch -Nyhan syndrome -inherited disorder of purine metabolism -first indicator of syndrome is increased uric acid crystals indicating incomplete purine metabolism the direction in which proteins migrate (toward anode or cathode) during electrophoretic separation of serum proteins at pH 8.6 is determined by - answer✔✔the ionization of carboxyl groups resulting in a net negative charge the safest method for disposing of hypodermic needles is - answer✔✔discard the needle in an impermeable container without other handling immediately after use an antimicrobri al that is inappropraite to report on an E. coli from a wound culture is - answer✔✔nitrofurantoin -this antimicrobrial is usually used for urine bugs caffeic acid disk innocculated with yeast isolate show brown pigment after a few hours. this is useful i n the ID of - answer✔✔Cryptococcus neoformans -posses phenoloxidase enzyme that breaks down caffeic acid into melanin - brown pigment saliva + anti -A: A+ B - O- saliva + anti -B: A - B+ O - EXAM STUDY MATERIALS July 23, 2024 4:26 PM saliv + anti -H: A - B- O- which of the following is the correct int erpretation of the saliva neutralization test - answer✔✔group O secretor reactivity with anti -H is no long demonstrable which indicates the presence of H substance; there is no A or B substance in the saliva as evidenced by ability of anti -A and anti -B to react with the respective cells *people with H substance and no A or B = group O secretors* cells that produce antibodies and lymphokines are - answer✔✔lymphocytes which of the following is a possible complication of massive transfusion? - answer✔✔hypothermia due to 1 -6C storage of RBCs urethral swab from man with urethral exu date plated on modified Thayer Martin agar - gram stain shows gram neg diplococci; plates incubated in ambient air - no growth after 48 hrs, why? - answer✔✔organism requires CO2 for growth N. gonorrhoeae require enhanced CO2 for optimal growth Antibody Sc reen: reactive with all 3 cells DAT: anti -IgG (+) anti -C3d ( -) Antibody ID studies: reactive with all 3 cells eluate testing: reactive with all 3 cells - answer✔✔autoantibody -reactivity of patients serum and eluate with all cells and positive DAT indicat e warm autoantibody which of the following disease states is treated with therapeutic plasma exchange (tpe)? - answer✔✔myasthenia gravis -myasthenia gravis - autoimmune disease - plasma exchange is used to remove autoantibodies A patient's serum contains a mixture of antibodies. One of the antibodies is identified as anti -D. Anti-Jka, anti -Fya and possibly another antibody are present. What technique(s) may be helpful to identify the other antibody(ies)? - answer✔✔enzyme panel; select cell panel increased alpha -1 and alpha -2 proteins - answer✔✔acute inflammation
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