Selenium, an Ultratrace Element, Is Used in the Synthesis of Selenocysteine

question 29

Multiple Choice

Selenium, an ultratrace element, is used in the synthesis of selenocysteine, which is ________

• A) an amino acid.
• B) a lipid.
• C) a fatty acid.
• D) a carbohydrate.
• E) a nucleic acid base.

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