Thyroxine Is a Peptide Hormone, but Its Mechanism Is Different

question 28

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

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Definitions:

Idle Workers

Employees who are not actively engaged in production or work due to lacking assignments or efficiency breakdowns.

Disrupted Production

Interruptions or disturbances in the normal manufacturing or production process.

Transportation Costs

Expenses associated with the movement of materials, goods, or personnel from one location to another, which can include freight, shipping, and logistics costs.

Receiving Costs

Expenses associated with accepting goods from suppliers, including inspection, storage, and document processing costs.