BOC CHEMISTRY Actual Exam Questions with 100%
Correct Answers| Verified Solutions Latest
2024/2025 u pdate
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
Increased totals serum lactic dehydrrogenase activity, confined to fractions 4 and 5, is
most likely to be associated with - ✔✔myocardial infarction
Regan isoenzyme has the same properties as alkaline phosphatase that originates in the
- ✔✔placenta
Assay of transketolase activity in blood is used to detect deficiency of - ✔✔thiamine
The substance that is measured to estimate the serum concentration of triglycerides by
MOST methods is - ✔✔glycerol
, Patients with Cushings syndrome exhibit - ✔✔Serum cortisol concentrations greater
than 15mg/dL
A one molal solution is equivalent to - ✔✔a solution containing one mole of solute
per kg of solvent
Which of the following statements about fluormetry are true - ✔✔A compound is
said to fluoresce when it absorbs light at one wavelength and emits light at a second
wavelength
A benefit of micro assays includes - ✔✔reduced reagent requirements
In competitive inhibition of an enzyme reaction the - ✔✔inhibitor binds to the
enzyme at the same site as the substrate
Kernictus is an abnormal accumulation of bilirubin in - ✔✔Brain tissue
Two standard deviations is the acceptable limit of error in the chemistry laboratory. If
you run the normal control 100 times, how many values would be out of control due to -
✔✔5
Serum haptoglobin - ✔✔Can be separated into distinct phenotypes by starch-gel
electrophoresis
Which of the following serum proteins migrates with the beta-globulins on cellulose
acetate at pH 8.6? - ✔✔C3 component of complement
Fasting serum phosphate concentration is controlled by the - ✔✔parathyroid glands
Correct Answers| Verified Solutions Latest
2024/2025 u pdate
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
Increased totals serum lactic dehydrrogenase activity, confined to fractions 4 and 5, is
most likely to be associated with - ✔✔myocardial infarction
Regan isoenzyme has the same properties as alkaline phosphatase that originates in the
- ✔✔placenta
Assay of transketolase activity in blood is used to detect deficiency of - ✔✔thiamine
The substance that is measured to estimate the serum concentration of triglycerides by
MOST methods is - ✔✔glycerol
, Patients with Cushings syndrome exhibit - ✔✔Serum cortisol concentrations greater
than 15mg/dL
A one molal solution is equivalent to - ✔✔a solution containing one mole of solute
per kg of solvent
Which of the following statements about fluormetry are true - ✔✔A compound is
said to fluoresce when it absorbs light at one wavelength and emits light at a second
wavelength
A benefit of micro assays includes - ✔✔reduced reagent requirements
In competitive inhibition of an enzyme reaction the - ✔✔inhibitor binds to the
enzyme at the same site as the substrate
Kernictus is an abnormal accumulation of bilirubin in - ✔✔Brain tissue
Two standard deviations is the acceptable limit of error in the chemistry laboratory. If
you run the normal control 100 times, how many values would be out of control due to -
✔✔5
Serum haptoglobin - ✔✔Can be separated into distinct phenotypes by starch-gel
electrophoresis
Which of the following serum proteins migrates with the beta-globulins on cellulose
acetate at pH 8.6? - ✔✔C3 component of complement
Fasting serum phosphate concentration is controlled by the - ✔✔parathyroid glands
