Fun Quiz: Test Your Clinical Chemistry Knowledge

#1. Enzyme reactions are affected by the following except:

Ionic strength

pH or acidity

Cofactors and coenzymes

Temperature

Concentrations of reactants

Atmospheric pressure

#2. Technique used to separate lipoproteins by their rates of flotation

Electrophoresis

Filtration

Osmosis

Fractional refrigeration

Ultracentrifugation

#3. An arterial blood sample is received in the laboratory 45 minutes after collection with a bubble in the syringe. The technologist should

Reject the sample because pO2 will be falsely low

Reject the sample because the pH will be falsely low

Reject the sample because the pCO2 will be falsely low

Perform the test immediately

#4. Addison’s disease is characterized by the following except

High sodium and chloride levels

Low aldosterone level

Low cortisol

Low urinary steroids

#5. A fluid rich in protein and cellular elements that oozes out of blood vessels due to inflammation and is deposited in nearby tissues.

Plasma

Enzymes

Exudate

Mucus

Transudate

#6. Which of the following analytes is sensitive to light?

Alcohol

Bilirubin

Ionized calcium

Creatinine

Lactic acid

#7. Which of the following indicates myocardial infarction?

LDH-1 > LDH-2

LDH-1 < LDH-2

LDH-1 = LDH-2

#8. A peptide that increases sodium and water excretion and causes vasodilation to decrease blood pressure

C-peptide

Antidiuretic hormone

Albumin

B-type natriuretic peptide

Aldosterone

#9. What is the effect of organophosphate poisoning on cholinesterase activity?

Decrease

No effect

Increase

#10. What is defined as the amount of acid needed to return pH to normal

Base deficit

Base excess

pCO2

pH

pO2

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