Which biochemical event does not take place during thyroid hormone synthesis?
A) One monoiodotyrosine molecule combines with one diiodotyrosine molecule to form one triiodothyronine molecule.
B) Two iodine molecules combine with one tyrosine molecule to form one diiodotyrosine molecule.
C) Two diiodotyrosine molecules combine to form one molecule of thyroxine.
D) Four iodine molecules combine with one tyrosine molecule to form one tetraiodothyronine molecule.
E) All of these.

Question

Quizplus · Accepted Answer

During thyroid hormone synthesis, iodine atoms (not molecules) are added to tyrosine residues. Four iodine atoms combine with two tyrosine molecules to form thyroxine (T4), not with one tyrosine molecule.

Which Biochemical Event Does Not Take Place During Thyroid Hormone