alleryStart learning →Which pigment gives normal urine its yellow colour?
AThe pigment urobilinogen
BThe pigment bilirubin
CThe pigment urochrome
DThe pigment creatinine
Answer & Solution
Correct answer: C. The pigment urochrome
1. Urine colour comes mostly from the breakdown products of red blood cell destruction.
2. The liver converts heme into water-soluble forms that reach the urine.
3. The yellow pigment produced this way is urochrome.
4. Creatinine is a muscle metabolite and carries no colour of its own.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section 25.1 Physical Characteristics of Urine_
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