Which Statement Concerning the Synthesis and Storage of Thyroid Hormones

question 115

Multiple Choice

Which statement concerning the synthesis and storage of thyroid hormones is INCORRECT?

• A) The "iodine pump" of the follicular cells is important for thyroid hormone production.
• B) Thyroid hormones are formed within a much larger molecule called thyroglobulin.
• C) Thyroid hormone synthesis is greatly stimulated by the presence of TSH.
• D) A one- to two-hour supply of thyroid hormone is stored within the colloid in the lumen of the follicle.

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Definitions:

Phosphate Bond

A chemical bond between a phosphorus atom and another atom, crucial in the storage and release of energy in living organisms.

ATP Channel Protein

A type of membrane protein that allows ATP molecules to move across cell membranes, often involved in cellular energy management.

Mitochondrial Matrix

The innermost compartment of mitochondria, enclosed by the inner membrane, containing enzymes for the citric acid cycle and DNA.

NADH

Nicotinamide adenine dinucleotide (NADH) is the reduced form of NAD+, an important coenzyme in cellular respiration, acting as an electron carrier.