Why is thyroxine considered a hormone and not | vedclass

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Question

(D) Thyroxine is classified as a hormone because it is a chemical messenger produced by an endocrine gland (the thyroid gland) and is secreted directl

Vedclass · Accepted Answer

It is directly poured into the blood.

Vedclass · Answer

(D) Thyroxine is classified as a hormone because it is a chemical messenger produced by an endocrine gland (the thyroid gland) and is secreted directly into the bloodstream to regulate physiological processes in target organs. Unlike enzymes,which are biological catalysts that speed up chemical reactions without being consumed,hormones act as signaling molecules that alter the activity of target cells. The defining characteristic of an endocrine hormone is its ductless secretion directly into the blood.

Why is thyroxine considered a hormone and not an enzyme?

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