Question

The formation of urea occurs in the

• A. Stomach
• B. Kidney
• C. Liver
• D. Pancreas

Answer 1

The correct option is C

Liver

The correct option is (C):

Explanation of the correct option:

1. Liver is a large gland that is present in the upper right side of the human body.
2. It is the site where protein is metabolized to form ammonia.
3. The ammonia is then converted to form urea.
4. Urea is a nitrogenous waste that is present in the urine of ureotelic organisms. For example, human beings.

Explanation of the incorrect options:

Option (A):

1. Stomach is a J-shaped pouch-like structure that is an important organ of the human digestive system.
2. Urea is not synthesized in the stomach.

Option (B):

1. Kidneys are the bean-shaped vital organs located on either side of the body and are responsible for the filtration of the blood.
2. Nephrons are the functional unit of the kidneys which look like a tiny funnel attached to a long tube.
3. The urea formed in the liver is transported through the bloodstream to reach the kidneys for filtration.

Option (D):

1. Pancreas is a leaf-like structure present in the upper abdomen which plays an important role in digestion and regulation of sugar level in blood.
2. It has no role in urea synthesis.

Final answer:

The formation of urea occurs in the liver.