Lead Produces a Serious Toxic Effect When Ingested Because It

question 10

Multiple Choice

Lead produces a serious toxic effect when ingested because it:

• A) irreversibly binds to heme iron in hemoglobin.
• B) vasoconstricts cardiac blood vessels and vasodilates peripheral vessels.
• C) depresses the central nervous system and induces coma.
• D) does not allow for the incorporation of heme into the porphyrin molecule.

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