Which Statement About Thyroxine Is True

question 34

Multiple Choice

Which statement about thyroxine is true?

• A) T₄ is made up of one tyrosine residue with four iodine atoms attached.
• B) T₄ is released in smaller quantities than T₃.
• C) T₃ can be converted to T₄ within target cells.
• D) Cold exposure for several days prompts increased conversion of T₄ to T₃.
• E) T₄ is more active than T₃.