Which of the following is porphyrines gives stools their characteristics brown color?
Stercobilin is a tetrapyrrolic bile pigment and is one end-product of heme catabolism. It is the chemical responsible for the brown color of human feces and was originally isolated from feces in 1932Urobilinogen is a colourless by-product of bilirubin reduction.Heme or haem is a cofactor consisting of a Fe2+ (ferrous) ion contained in the centre of a large heterocyclic organic ring called a porphyrin
Biliverdin
Urobilinogen
Heme
Stercobilin
Metabolism of nucleic acids