All of the Following Statements About Iron Metabolism Are Correct

question 24

Multiple Choice

All of the following statements about iron metabolism are correct EXCEPT

• A) iron is absorbed by the intestinal mucosa in the free Fe3+ form
• B) overloading of iron in the body can occur as a result of repeated transfusions
• C) transferrin is a glycoprotein that binds iron in the plasma
• D) specific receptors for transferrin are probably required for delivery of iron to liver and erythropoietic tissue
• E) ferritin stores iron in an oxidized form within a central cavity formed by its 24 subunits

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Definitions:

Human XYZ Gene

This term does not correspond with standard genetic nomenclature or recognized genes, suggesting it may not be a real key term.

Yeast Cell

A single-celled fungus that is used in baking and brewing for its ability to ferment sugars, producing carbon dioxide and ethanol.

Peptidyl Transferase

The ribosomal enzyme (a ribozyme) that catalyzes the formation of a peptide bond.

Ribozyme

A molecule of RNA that has catalytic properties.