Lecture 20 Iodine - MC

Question 1

What is the primary role of the thyroid hormone?
A) Regulation of calcium levels in the blood
B) Regulation of energy metabolism and protein synthesis
C) Synthesis of digestive enzymes
D) Regulation of sodium and potassium balance

Answer 1

B

Question 2

What forms can dietary iodine be found in?
A) Only as iodate (IO3-)
B) Bound to amino acids or free as iodate (IO3-) or iodide (I-)
C) Exclusively in the form of iodide (I-)
D) Attached to fatty acids

Answer 2

B

Question 3

*How is iodide absorbed during digestion?
A) It cannot be absorbed and must be injected.
B) Iodide is absorbed most efficiently.
C) Only organic forms are absorbed.
D) It is absorbed after being converted to iodate.

Answer 3

B

Question 4

What are the primary functions of the thyroid hormones T3 and T4?
A) They regulate blood pressure and heart rate.
B) They are involved in temperature regulation, metabolism, and growth.
C) They primarily influence water and electrolyte balance.
D) They synthesize vitamin D and calcium absorption.

Answer 4

B