Question

where is urobilinogen formed?
a) intestines
b) liver
c) gallbladder
d) kidney

Explanation:

Urobilinogen is formed in the intestines through the action of intestinal bacteria on bilirubin (which is excreted from the liver into the bile and then into the intestines). The liver produces bilirubin, the gallbladder stores bile, and the kidney is involved in excreting urobilinogen in urine, but urobilinogen's formation occurs in the intestines.

Answer:

a) Intestines