AP BIOLOGY

Detailed explanation-1: -The yellow colour of urine is due to the presence of pigment urochrome. This pigment is formed by bile pigment bilirubin.

Detailed explanation-2: -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.

Detailed explanation-3: -clear yellow from the pigment urochrome, an end product of protein metabolism. There are also traces of other pigments: urobilin and uroerythrin. The colour may be influenced as well by vitamins, food dyes, beetroot, and certain drugs.

Detailed explanation-4: -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-5: -The pigment urochrome, which is a breakdown product of hemoglobin from dead RBCs, gives the yellow color to the urine.