AP BIOLOGY

Detailed explanation-1: -Urobilin or urochrome is the chemical primarily responsible for the yellow color of urine. It is a linear tetrapyrrole compound that, along with the related colorless compound urobilinogen, are degradation products of the cyclic tetrapyrrole heme.

Detailed explanation-2: -Urine has a yellow tint due to the presence of urochrome. Urochrome is formed through the breakdown of bile pigments in the liver, preceded by the breakdown of hemoglobin.

Detailed explanation-3: -Overview. Urochrome is a pigment that causes the yellow color in urine. It is a breakdown product of the blood’s hemoglobin and is removed by the kidneys.

Detailed explanation-4: -The most common color of urine is yellow, which is caused by the presence of urobilin, a biochemical waste product generated from the breakdown of old red blood cells. (Your body makes about 2 million new red blood cells every day, and recycles an equal number of old ones.)