Which of the following statements is INCORRECT about how the components of hemog

Question

Which of the following statements is INCORRECT about how the components of hemoglobin are recycled?

Which of the following statements is INCORRECT about how the components of hemoglobin are recycled?

a. Hemoglobin can be recycled only if phagocytized by macrophages. b. Each heme is stripped of its iron and converted to bilirubin, then excreted in bile. c. The alpha and beta chains are released into the bloodstream for use by other cells. d. Iron ions are either stored in a phagocytic cell or circulate in the blood, bound to transferrin (a plasma protein).

Explanation / Answer

Ans.

The choice (b) is incorrect.

Correct statement: Each heme is stripped of its iron and converted into BILIVERDIN which is then converted into bilirubin which is then secreted in the bile.

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