MEDICAL LABORATORY TECHNICIAN:
STUDY GUIDE & EXAM PREP
QUESTIONS AND VERIFIED
ANSWERS|100% CORRECT|GRADE A+
The proper order in which to perform a gram stain is: - ANSWER Flood the slide with crystal violet, flood
with iodine, rinse with ethanol, flood with safranin
Which organ(s) is the primary regulator of electrolyte balance in the human body? - ANSWER Kidneys
What morphological feature can aid in the differentiation of spherical forms of transitional epithelial cells
and renal tubular epithelial cells? - ANSWER Nucleus orientation
A wound specimen was set up for culture with the source listed as right thigh abscess. Examination of
the growth on blood agar plates shows cream-colored, smooth, slightly raised colonies with a
transparent zone of beta hemolysis surrounding them. Colonies test catalase-positive and coagulase-
positive, and Gram stain shows Gram-positive cocci in clusters. What is the presumptive identification of
this organism? - ANSWER Staphylococcus aureus
Cortisol levels exhibit diurnal variation, so baseline levels for evaluation of adrenal function should be
collected at what times? - ANSWER 8 am and 4 pm
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