The following are true:
a. thyroxine is formed by iodination of tyrosine
b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5
c. about 99.5% of thyroxines is protein bound
d. T3 is more active than T4
a. thyroxine is formed by iodination of tyrosine
b. the ratio of T3 :T4 secreted by the thyroid gland is 1:5
c. about 99.5% of thyroxines is protein bound
d. T3 is more active than T4