Multiple choice

Bilirubin and biliverdin are found in

  1. blood

  2. bile

  3. pancreatic juice

  4. saliva
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bilirubin and biliverdin are found in bile. Bilirubin is created by the activity of biliverdin reductase on biliverdin, a green tetrapyrrolic bile pigment that is also a product of heme catabolism. Bilirubin, when oxidized, reverts to become biliverdin once again.

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