The Ease with Which Iron Can Move from a Reduced

question 17

Multiple Choice

The ease with which iron can move from a reduced form to an oxidized form in its metalloprotein transferrin is important because:

• A) only the reduced form of iron can be stored as transferrin.
• B) transport of iron in transferrin occurs only in the oxidized state.
• C) it can block the excessive uptake of copper in hepatocytes.
• D) the oxidized form of iron reacts best when binding oxygen.

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