Which of the Following Statements Are True of Trace Elements

question 8

Multiple Choice

Which of the following statements are true of trace elements (Select all that apply) ?

• A)Iron is part of the hemoglobin in RBCs.
• B)Vitamin B12 contains the mineral copper.
• C)The transmission of nerve impulses depends on sodium and potassium.
• D)Cobalt is needed for the hormone thyroxine.
• E)Phosphorus is part of DNA and RNA.
• F)The mineral necessary for blood clotting is iodine.
• G)The mineral that helps store oxygen in muscle cells is magnesium.
• H)Sulfur is part of some proteins.

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