Digestion-And-Absorption Question 624
Question: The normal brown-red colour of faeces is due to the presence of:
Options:
A) bilirubin
B) biliverdin
C) stercobilin
D) urobilinogen
Show Answer
Answer:
Correct Answer: D
Solution:
Stercobilin is the pigment that imparts the characteristic brown-red colour to stools.
Bilirubin is reduced to urobilinogen by bacterial flora.
Urobilinogen is further reduced to strecobilinogen.
Oxidation of stercobilinogen in air yields stercobilin.
BETA
