CH1: Choose only one answer

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For topic: Enzymes
By Dr Mohammad Moharram

1- One of the following sets is consistent with Macroamylasemia: *

1 point

a. Normal Serum Amylase & elevated urine amylase values.

b. Normal serum and urine amylase values.

c. Increased serum amylase and normal urine amylase values.

d. Increased serum amylase and urine amylase values.

2- Amino transferase enzyme catalyze which of the following: *

1 point

a. Exchange of amino groups & sulfhydryl groups between alpha-amino & sulfur- containing acids.

b. Exchange of amino & keto groups between alpha-amino & alpha-keto acids.

c. Hydrolysis of amino acids and keto acids.

d. Reversible transfer of hydrogen from amino acids to coenzymes.

3- The greatest activities of serum AST and serum ALT are seen in: *

1 point

a. Acute viral hepatitis.

b. Primary biliary cirrhosis.

c. Metabolic hepatic cirrhosis.

d. Alcoholic cirrhosis.

4- Slight increase of alkaline phosphatase , marked increase of aspartate amino transferase , marked increase of alanine amino transferase and slight increase of gamma glutamyl transferase are most consistent with: *

1 point

a. Acute hepatitis.

b. Chronic hepatitis.

c. Obstructive jaundice.

d. Liver hemangioma.

5- Which of the following is associated with the greatest elevation of LDH isoenzyme 1: *

1 point

a. Pneumonia

b. Glomerulonephritis.

c. Pancreatitis.

d. Pernicious anemia.

6- An electrophoretic separation of LDH isenzyme that has an elevation in LD1 and LD2 in a “flipped” pattern is consistent with: *

1 point

a. Myocardial infarction.

b. Viral hepatitis.

c. Pancreatitis.

d. Renal failure.

7- Increased serum LDH confined to fraction 4 & 5 is most likely to be seen in : *

1 point

a. Pulmonary infarction.

b. Hemolytic anemia.

c. Myocardial infarction.

d. Acute viral hepatitis.

8- The most heat labile fraction of alkaline phosphatase is obtained from: *

1 point

a. Liver

b. Bone

c. Intestine

d. Placenta

9- The most sensitive enzymatic marker for liver damage from ethanol intake is: *

1 point

a. ALT

b. AST

c. GGT

d. ALP

10- Isoenzyme assay are performed to improve: *

1 point

a. Precision

b. Accuracy

c. Sensitivity

d. Specificity

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