Which events occur during the recycling of aged or damaged erythrocytes? (Order is not important. )
A: The heme group is converted into biliverdin.
B: Bilirubin is stored in the liver.
C: The iron ions in hemoglobin are removed.
D: The iron ions are stored in the liver.
E: The iron ions are stored in the red bone marrow.
F: Membrane proteins and globin proteins are broken down and reused.
G: The erythrocyte contents,excluding the globins,are excreted via the digestive tract unchanged.

Question

Quizplus · Accepted Answer

During the recycling of aged or damaged erythrocytes, the heme group is converted into biliverdin (A) and then into bilirubin, which is stored in the liver (B). The iron ions in hemoglobin are removed (C) and then either stored in the liver (D) or used to produce new erythrocytes in the red bone marrow (E). Membrane proteins and globin proteins are broken down and reused (F), while the erythrocyte contents, excluding the globins, are excreted via the digestive tract unchanged (G). Therefore, the events that occur during erythrocyte recycling are a, c, d, and f. However, the only option that includes all of these events is option B.

Which Events Occur During the Recycling of Aged or Damaged