Final answer:
The liver is the organ with the capacity to excrete heme waste in the body.
Step-by-step explanation:
The organ that has the capacity to remove heme waste from the body is the liver.
The liver is responsible for breaking down substances in the blood, including toxins, and excreting them in bile. The waste product of hemoglobin catabolism, bilirubin, is also excreted in bile. Bile is released into the small intestine and eventually eliminated in feces by the large intestine.
The kidneys also contribute to the removal of waste products, including bilirubin, by filtering the blood and secreting them into urine.