QUESTIONS WITH SOLUTIONS GRADED A+
◉ How often should biological safety hoods be inspected?
Answer: Annually
◉ What is the minimum number of standards required for a
standard curve?
Answer: 3
◉ What is the maximum magnification using a brightfield
microscope?
Answer: 1000X
◉ What is the most accurate pipette for reconstituting control
material?
Answer: Glass volumetric pipettes
◉ Which unit of measure refers to 10^-3?
Answer: Milli-
, ◉ What is the calculated cholesterol/HDL ratio given the following
results?
Cholesterol 225 mg/dL
HDL 75 mg/dL
Answer: 225/75= 3.00
◉ 200 microliters of patient serum is diluted with 800 microliters of
saline. What is the final dilution?
Answer: 1:5
◉ What is the calculated LDL cholesterol given the following lipid
profile results?
Triglycerides 190 mg/dL
Cholesterol 225 mg/dL
HDL 75 mg/dL
Answer: LDL = Total cholesterol - HDL - (TG/5)
112 = 225 - 75 - (190/5)
◉ How is relative centrifugal force calculated?
Answer: 1.18 x 10^-5 x r x rpm^2
◉ A chain of custody is required for all of the following: