Question 1

What is the primary function of direct bilirubin in the body?

Accepted Answer

To be excreted in bile and help with fat digestion

Answer

To store fat for energy

Answer

To regulate blood sugar levels

Answer

To transport oxygen in the blood

Question 2

Which condition is commonly associated with elevated levels of direct bilirubin?

Accepted Answer

Cholestasis

Answer

Hypertension

Answer

Dehydration

Answer

Anemia

Question 3

What is a typical role of direct bilirubin in clinical diagnostics?

Accepted Answer

To help differentiate between types of jaundice

Answer

To assess kidney function

Answer

To measure liver enzyme levels

Answer

To evaluate blood cholesterol levels

Question 4

Which laboratory test is most commonly used to measure direct bilirubin levels?

Accepted Answer

Total and direct bilirubin test

Answer

Electrolyte panel

Answer

Liver function test

Answer

Complete blood count

Question 5

What is the significance of elevated direct bilirubin levels in an adult patient?

Accepted Answer

It may indicate liver dysfunction or biliary obstruction

Answer

It points to a deficiency in vitamin B12

Answer

It suggests an increased metabolic rate

Answer

It indicates high protein intake

Question 6

What is the primary difference between direct and indirect bilirubin?

Accepted Answer

Direct bilirubin is conjugated, while indirect bilirubin is unconjugated

Answer

Direct bilirubin is water-insoluble, while indirect is water-soluble

Answer

Direct bilirubin is less toxic than indirect bilirubin

Answer

Direct bilirubin is made in the intestines, while indirect is made in the liver

Question 7

In which part of the body is direct bilirubin primarily excreted?

Accepted Answer

In the bile

Answer

Through the skin

Answer

In the urine

Answer

In saliva

Question 8

What happens to direct bilirubin levels in cases of hemolytic anemia?

Accepted Answer

They may decrease due to increased conversion to indirect bilirubin

Answer

They decrease due to liver dysfunction

Answer

They remain unchanged

Answer

They increase due to decreased excretion

Question 9

Which of the following lab findings would suggest an issue with the conjugation of bilirubin in the liver?

Accepted Answer

Elevated indirect bilirubin levels

Answer

Elevated direct bilirubin levels

Answer

Normal total bilirubin levels

Answer

Decreased liver enzymes

Question 10

What physiological process converts indirect bilirubin into direct bilirubin in the liver?

Accepted Answer

Conjugation with glucuronic acid

Answer

Methylation with carbon

Answer

Reduction with hydrogen

Answer

Oxidation with oxygen

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