Urea is derived from

Options

A. Fats
B. Amino acids
C. Carbohydrates
D. Uric acid

Answer

**Step-by-Step Solution:**

1. **Understanding Urea**: Urea is a nitrogenous waste product that is primarily produced in the liver. It is a key component of the body's method for excreting excess nitrogen.

2. **Metabolism of Amino Acids**: The process begins with the metabolism of amino acids. When proteins are broken down, they yield amino acids, which are then further metabolized.

3. **Formation of Ammonia**: During the breakdown of amino acids, one of the byproducts is ammonia (NH3). Ammonia is highly toxic to the body, so it needs to be converted into a less toxic form.

4. **Conversion to Urea**: The ammonia produced is then combined with carbon dioxide (CO2) in the liver to form urea. This process is known as the urea cycle, which helps detoxify ammonia.

5. **Role of Water**: The conversion of ammonia to urea requires water (H2O), as it facilitates the reaction and helps in the excretion of urea from the body.

6. **Conclusion**: Since urea is formed from the breakdown of amino acids, the correct answer to the question "Urea is derived from" is **Option B: amino acids**.

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