Thyroxine Is a Peptide Hormone,but Its Mechanism Is Different from Other

question 25

Multiple Choice

Thyroxine is a peptide hormone,but its mechanism is different from other peptide hormones.Which of the following statements is true concerning this difference?

• A)It is a stimulant of cellular metabolism and targets all cells.
• B)It causes positive feedback.
• C)It is very specific in the cell type it targets.
• D)It does not require a second messenger to effect a response.

---

Definitions:

Value-Expressive Function

The role of beliefs, purchases, or behaviors in expressing an individual's values, self-concept, and social identity.

Utilitarian Function

A concept in psychology suggesting that attitudes serve a practical function for individuals, helping them to avoid pain or achieve pleasurable outcomes.

Ego-Defensive Function

A psychological mechanism in which individuals protect their self-esteem or ego from being threatened by unpleasant realities or by rationalizing their failures.

Value-Expressive Function

The role or purpose of attitudes or behaviors in expressing an individual's values, beliefs, and self-concept, often influencing consumer choices and affiliations.