Which one(s) is bile pigment?

Options

A. Bilirubin and haemoglobin
B. Biliverdin and cytochrome
C. Bilirubin and biliverdin
D. Haemoglobin and cytochrome

Answer

To determine which substances are bile pigments, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Bile Composition**: Bile is a digestive fluid produced by the liver and stored in the gallbladder. It contains bile salts, cholesterol, phospholipids, and bile pigments.

2. **Identify Bile Pigments**: The primary bile pigments are bilirubin and biliverdin. These are products of the breakdown of hemoglobin from red blood cells.

3. **Differentiate Bile Components**:
- **Bile Salts**: These are derived from cholesterol and aid in the digestion and absorption of fats.
- **Cholesterol**: A type of lipid that is also present in bile but is not a pigment.
- **Phospholipids**: These are also part of bile but do not qualify as bile pigments.

4. **Conclude on Bile Pigments**: Among the components mentioned, bilirubin and biliverdin are specifically recognized as bile pigments.

5. **Final Answer**: Therefore, the bile pigments are **bilirubin and biliverdin**.