Which of the following chemicals is responsible for the yellow colour in urine?

Urobilin

The correct answer is Option (1)- Urobilin

The chemical responsible for the yellow color in urine is Urobilin.

Explanation:

Urobilin is a yellow pigment that results from the breakdown of bilirubin, a product of the breakdown of hemoglobin from old red blood cells. Bilirubin is initially formed in the liver and then excreted in bile. Some of the bilirubin is converted into urobilin, which gives urine its characteristic yellow color.

The other substances mentioned:

• Albumin: A protein normally not found in significant amounts in urine; its presence can indicate kidney damage.
• Bilirubin: While responsible for the initial yellow color, urobilin is derived from the breakdown of bilirubin in the intestine.
• Creatinine: A waste product from muscle metabolism, and its levels in urine can be an indicator of kidney function. However, it is not responsible for the yellow color of urine.