BOC CHEMISTRY Questions and
Answers|Latest Update
Which of the following serum constituents is unstable if a blood specimen is left standing at
room temperature for 8 hours before processing? glucose
A urine screening test for porphobilinogen is positive. The MOST likely disease is acute
porhphyria attack
In electrophoretic analysis, buffer act as a carrier for ions
A condition in which erthyrocyte protoporphyrin is increased is iron deficiency anemia
The stimulant that causes localized sweating for the sweat test is pilocarpine nitrate
In the sweat test, the sweating stimulant is introduced to the skin by application of an
electric current
,The formula for calculating serum osmolality that incorporates a correction for the water
content of plasma is 2Na+Glucose/20+(BUN/3)
Osmolal gap is the difference between the calculated and measured osmolality values.
Erroneous ammonia levels can be eliminated by all of the following EXCEPT storing the
specimen protected from light until the analysis is done
Which of the following applies to cryoscopic osmometry the temperature at equilibrium
is a function of the number of particles in solution
The first step to be taken when attempting to repair a piece of electronic equipment is
turn the instrument off
Most of the carbon dioxide present in blood is in the form of bicarbonate ion
The degree to which the kidney concentrates the glomerular filtrate can be determined by
urine to serum osmolality ratio
,How many grams of sulfosalicylic acid (MW=254) are required to prepare 1L of a 3% (w/v)
solution 30
A physician suspects his patient has pancreatitis. Which test would be most indicative of this
disease amylase
In a specimen collected for plasma glucose analysis, sodium fluoride inhibits glycolysis
To be analyzed by gas liquid chromatography, a compound must be volatile or made
volatile
The solute that contributes the most to the total serum osmolality is sodium
Which of the following electrodes is based on the principle of amperometric measurement
PO2 electrode
, The Porter-SIlber method involves which part of the steroid molecule dihydroxyacetone
side chain
Which family of steroid hormones is characterized by an unsaturated A ring? estrogens
Which of the following statements about immunoassays using enzyme-labeled antibodies or
antigens is correct quantitation of the label can be carried out with a spectrophotometer
Which of the following chemical determinations may be help in establishing the presence of
seminal fluid acid phosphatase
Which of the following serum protein fractions is most likely to be elevated in patients with
nephrotic syndrome alpha-2 globulin and beta globulin
Which of the following enzyme substrates for prostate acid phosphatase determination results
in the highest specificity thymolphtalein monophosphatase
Answers|Latest Update
Which of the following serum constituents is unstable if a blood specimen is left standing at
room temperature for 8 hours before processing? glucose
A urine screening test for porphobilinogen is positive. The MOST likely disease is acute
porhphyria attack
In electrophoretic analysis, buffer act as a carrier for ions
A condition in which erthyrocyte protoporphyrin is increased is iron deficiency anemia
The stimulant that causes localized sweating for the sweat test is pilocarpine nitrate
In the sweat test, the sweating stimulant is introduced to the skin by application of an
electric current
,The formula for calculating serum osmolality that incorporates a correction for the water
content of plasma is 2Na+Glucose/20+(BUN/3)
Osmolal gap is the difference between the calculated and measured osmolality values.
Erroneous ammonia levels can be eliminated by all of the following EXCEPT storing the
specimen protected from light until the analysis is done
Which of the following applies to cryoscopic osmometry the temperature at equilibrium
is a function of the number of particles in solution
The first step to be taken when attempting to repair a piece of electronic equipment is
turn the instrument off
Most of the carbon dioxide present in blood is in the form of bicarbonate ion
The degree to which the kidney concentrates the glomerular filtrate can be determined by
urine to serum osmolality ratio
,How many grams of sulfosalicylic acid (MW=254) are required to prepare 1L of a 3% (w/v)
solution 30
A physician suspects his patient has pancreatitis. Which test would be most indicative of this
disease amylase
In a specimen collected for plasma glucose analysis, sodium fluoride inhibits glycolysis
To be analyzed by gas liquid chromatography, a compound must be volatile or made
volatile
The solute that contributes the most to the total serum osmolality is sodium
Which of the following electrodes is based on the principle of amperometric measurement
PO2 electrode
, The Porter-SIlber method involves which part of the steroid molecule dihydroxyacetone
side chain
Which family of steroid hormones is characterized by an unsaturated A ring? estrogens
Which of the following statements about immunoassays using enzyme-labeled antibodies or
antigens is correct quantitation of the label can be carried out with a spectrophotometer
Which of the following chemical determinations may be help in establishing the presence of
seminal fluid acid phosphatase
Which of the following serum protein fractions is most likely to be elevated in patients with
nephrotic syndrome alpha-2 globulin and beta globulin
Which of the following enzyme substrates for prostate acid phosphatase determination results
in the highest specificity thymolphtalein monophosphatase
