BOC Chemistry Exam Questions with Revised
Answers| Verified 100% Correct Latest 2024/2025
update
A 21-year-old man with nausea, vomiting, and jaundice has the following laboratory
findings:
Total serum bilirubin 8.5 mg/dL (normal 0-1.0 mg/dL)
Direct serum bilirubin 6.1 mg/dL (normal 0-0.5 mg/dL)
Urine urobilinogen Increased
Urine bilirubin Positive
AST 200 U/L (normal 0-50 μ/L)
ALP 160 U/L (normal 0-150 μ/L)
What disease state are these findings consistent with?
A. Chronic liver disease
B. Obstructive jaundice
C. Hemolytic anemia
D. Early hepatitis - ✔✔D
True or false? Chloride is the major extracellular anion in plasma. - ✔✔True
The sweat test for chloride is used as a screening test for:
A. Parkinson's disease
B. Cystic fibrosis
C. Pancreatitis
,D. Hyper- or hypochloremia
E. Hyperkinetic disorders - ✔✔B
Which of the following electrolytes would be increased in the serum if the blood
specimen was hemolyzed?
A. Potassium only
B. Potassium, chloride and phosphate
C. Chloride and sodium
D. Bicarbonate, potassium, and phosphate
E. - ✔✔A
True or false? Blood is drawn into a Vacutainer tube and allowed to clot. If the serum is
not separated from the cells, the serum potassium will tend to decrease and the serum
sodium will tend to increase - ✔✔False
An electrolyte panel was performed on a patient in the emergency room. The following
values were reported:
Sodium: 150 mEq/L Potassium: 5 mEq/L
Chloride: 110 mEq/L Bicarbonate: 30 mEq/L
The anion gap (without using K) for this patient is:
A. 5
B. 8
C. 10
D. 15
E. 17 - ✔✔C
, Hypernatremia commonly occurs in:
A. Burns, syndrome of inappropriate ADH, and excessive sweating without water intake
B. Burns and excessive sweating without water intake
C. Syndrome of inappropriate ADH and nephrotic syndrome
D. Nephrotic syndrome only
E. Burns, syndrome of inappropriate ADH, excessive sweating without water intake, and
nephrotic syndrome - ✔✔B
Which of the following conditions is associated with a low serum magnesium
determination?
A. Addison's disease
B. Hemolytic anemia
C. Hypothyroidism
D. Overuse of laxatives or antacids - ✔✔C
If serum proteins were immersed in a buffer of pH 8.6, which protein, albumin (pI = 4.7)
or gamma globulin (pI = 7.6) would migrate the farthest by electrophoresis, and toward
which electrode?
A. Albumin/anode
B. Albumin/cathode
C. Gamma globulin/anode
D. Gamma globulin/cathode - ✔✔A
Elevations in which of the following are MOST likely to indicate liver disease?
A. AST, ALT and ALK phosphatase
B. ALK phosphatase, creatinine, and uric acid
C. ALK phosphatase, creatinine, and serum potassium
Answers| Verified 100% Correct Latest 2024/2025
update
A 21-year-old man with nausea, vomiting, and jaundice has the following laboratory
findings:
Total serum bilirubin 8.5 mg/dL (normal 0-1.0 mg/dL)
Direct serum bilirubin 6.1 mg/dL (normal 0-0.5 mg/dL)
Urine urobilinogen Increased
Urine bilirubin Positive
AST 200 U/L (normal 0-50 μ/L)
ALP 160 U/L (normal 0-150 μ/L)
What disease state are these findings consistent with?
A. Chronic liver disease
B. Obstructive jaundice
C. Hemolytic anemia
D. Early hepatitis - ✔✔D
True or false? Chloride is the major extracellular anion in plasma. - ✔✔True
The sweat test for chloride is used as a screening test for:
A. Parkinson's disease
B. Cystic fibrosis
C. Pancreatitis
,D. Hyper- or hypochloremia
E. Hyperkinetic disorders - ✔✔B
Which of the following electrolytes would be increased in the serum if the blood
specimen was hemolyzed?
A. Potassium only
B. Potassium, chloride and phosphate
C. Chloride and sodium
D. Bicarbonate, potassium, and phosphate
E. - ✔✔A
True or false? Blood is drawn into a Vacutainer tube and allowed to clot. If the serum is
not separated from the cells, the serum potassium will tend to decrease and the serum
sodium will tend to increase - ✔✔False
An electrolyte panel was performed on a patient in the emergency room. The following
values were reported:
Sodium: 150 mEq/L Potassium: 5 mEq/L
Chloride: 110 mEq/L Bicarbonate: 30 mEq/L
The anion gap (without using K) for this patient is:
A. 5
B. 8
C. 10
D. 15
E. 17 - ✔✔C
, Hypernatremia commonly occurs in:
A. Burns, syndrome of inappropriate ADH, and excessive sweating without water intake
B. Burns and excessive sweating without water intake
C. Syndrome of inappropriate ADH and nephrotic syndrome
D. Nephrotic syndrome only
E. Burns, syndrome of inappropriate ADH, excessive sweating without water intake, and
nephrotic syndrome - ✔✔B
Which of the following conditions is associated with a low serum magnesium
determination?
A. Addison's disease
B. Hemolytic anemia
C. Hypothyroidism
D. Overuse of laxatives or antacids - ✔✔C
If serum proteins were immersed in a buffer of pH 8.6, which protein, albumin (pI = 4.7)
or gamma globulin (pI = 7.6) would migrate the farthest by electrophoresis, and toward
which electrode?
A. Albumin/anode
B. Albumin/cathode
C. Gamma globulin/anode
D. Gamma globulin/cathode - ✔✔A
Elevations in which of the following are MOST likely to indicate liver disease?
A. AST, ALT and ALK phosphatase
B. ALK phosphatase, creatinine, and uric acid
C. ALK phosphatase, creatinine, and serum potassium
