Page 94 - Practical Handout bio 2 mnu 2025_Neat

Level two – Semester 4 - PharmD Biochemistry-II PB-403 (Practical course) 2024/2025

1. What is the primary organ responsible for urea excretion?

A. Liver

B. Kidneys

C. Lungs

D. Intestines

Answer: B. Kidneys

2. How is urea formed in the body?

A. From carbohydrate metabolism

B. By the breakdown of fatty acids

C. Through the conversion of ammonia in the liver via the urea cycle

D. From protein synthesis in muscles

Answer: C. Through the conversion of ammonia in the liver via the urea

cycle

3. Which of the following represents the normal reference value of BUN

(Blood Urea Nitrogen)?

A. 1.8 – 7.1 mmol/L

B. 10 – 30 mg/dL

C. 7 – 20 mg/dL

D. 30 – 50 mmol/L

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