The colour of faeces is due to the (1) urochrome (2) biliverdin (3) stercobilin (4) bacteria ?

Question

Answer

Biliverdin.

Answer

Biliverdin.... A yellow pigment..!

Answer

Answer is b) biliverdin. It is a yellow coloured waste product ( pigmented) produced by the liver and secreted into the gut. therefore, as a whole, the undigested food ie, faeces holds it's characteristic color.

Answer

L-Urobilin or Stercobilin is a byproduct ofbilirubin degradation. It is a tetrapyrrole chemical compound, responsible for the typical brown color of human feces.

Answer

3. stercobilin..Supriya got right..

Answer

3)Stercobilin

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Answer is b

Answer

The color of faeces is due to:

1. Urochrome:
- Urochrome is a yellow pigment that is responsible for the normal yellowish color of urine.
- Some of this pigment is also passed through the digestive system and contributes to the color of faeces.
- Urochrome is a product of the breakdown of hemoglobin, the oxygen-carrying molecule found in red blood cells.

2. Biliverdin:
- Biliverdin is a green pigment that is produced during the breakdown of heme, a component of hemoglobin.
- When red blood cells reach the end of their lifespan, they are broken down in the liver, releasing bilirubin and biliverdin.
- Biliverdin is further converted into bilirubin, which is then excreted in bile and contributes to the color of faeces.

3. Stercobilin:
- Stercobilin is a brown pigment that is formed from the breakdown of bilirubin in the intestines.
- Bilirubin is converted into stercobilin by bacteria present in the colon.
- Stercobilin gives faeces its characteristic brown color.

4. Bacteria:
- Bacteria play a crucial role in the digestion and breakdown of food in the intestines.
- They also contribute to the color of faeces by metabolizing certain compounds, including bilirubin.
- The presence and activity of bacteria in the intestines influence the final color of faeces.

Summary:
The color of faeces is a result of several factors including the presence of urochrome, biliverdin, stercobilin, and the activity of bacteria in the intestines. Urochrome, a yellow pigment derived from the breakdown of hemoglobin, contributes to the yellowish color of faeces. Biliverdin, a green pigment formed during the breakdown of heme, is further converted into bilirubin, which is then excreted in bile and influences the color of faeces. Stercobilin, a brown pigment produced from the breakdown of bilirubin by bacteria in the intestines, gives faeces its characteristic brown color. The activity of bacteria in the intestines also plays a role in metabolizing various compounds and influencing the final color of faeces.

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