1. What mineral is critical to the synthesis of thyroxine?
a. Iron
b. Copper
c. Iodine
d. Magnesium
2. A woman with a severe iodine deficiency during pregnancy may give birth to a child with...
a. anemia.
b. rickets.
c. cretinism.
d. allergies.
3. A simple goiter may be caused:
a. when the thyroid gland enlarges in an effort to compensate for a lack of iodine essential for the synthesis of thyroxin.
b. by a metabolic error of metabolism which manifests as cretinism
c. when the thyroid gland enlarges because of the lack of salt(NaCl) essential for the synthesis of iodine.
d. by a selenium deficiency.