Fun Quiz: Test Your Clinical Chemistry Knowledge

#1. Which organ stimulates the pituitary gland into producing stimulating hormones?

Cerebral cortex

Hippocampus

Cerebral medulla

Hypothalamus

Medulla oblongata

#2. Which statement is false about glucagon?

Hormone given to patients with severe hypoglycemia

Produced by the alpha cells of the pancreas

Increases breakdown of liver glycogen into glucose

Decreases serum glucose levels

Stimulates glycogenolysis

#3. Main organ involved in protein synthesis and its breakdown to urea.

Liver

Intestines

Spleen

Kidney

Pancreas

#4. Which of the following statements is true?

Rate of decrease in absorbance of NADH at 340nm is proportional to LD activity

Unlike potassium, prolonged contact of serum to cells will not affect LDH levels

LDH converts of pyruvate to lactate while reducing NADH to NAD

LDH is not affected by hemolysis

Rate of increase in absorbance of NAD at 340nm is proportional to LD activity

#5. The following are quantitative tests for the detection of aminoaciduria except

Ion-exchange chromatography

Gas chromatography mass spectrometry

HPLC

Thin layer chromatography with ninhydrin

#6. Which statement is true about the gray top tube?

Both sodium fluoride and potassium oxalate enhances enolase activity

Enhances glycolysis and anaerobic respiration of cells

Sodium iodoacetate increases G-3-P dehydrogenase activity

Contains sodium chloride and potassium oxalate, or sodium iodoacetate

Not an ideal anticoagulant for electrolyte testing

#7. Major intracellular cation that is 23 times higher in cells than in plasma

Zinc

Calcium

Potassium

Magnesium

Sodium

#8. Type of error that is present in all measurements with no pattern; due to instrument, operator or environment

Systematic error

Random error

Determinate errors

Negligent errors

#9. Increased levels of this analyte from prolonged standing due to glycolysis and anaerobic respiration

Glucose

Lactic acid

Ammonia

Potassium

Acetoacetic acid

#10. Which enzyme shows an elevation in acute pancreatitis?

Both Amylase and Lipase

Lipase

Acid phosphatase

Amylase

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