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Pigments found in bile are formed during catabolism:

Correct answer: A. Haem catabolism

  • A. Haem catabolism
  • B. Globin catabolism
  • C. Cholesterol catabolism
  • D. Both (A) and (C)

Explanation

Haem is a component of hemoglobin, the molecule responsible for carrying oxygen in red blood cells. During heme catabolism, heme is broken down into biliverdin, a green pigment, which is then converted into bilirubin, a yellow pigment. These pigments are excreted in bile.

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About Homeostasis

Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.

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