Refer to the Diagram $T _ { 4 }$ B) $T _ { 3 }$

question 97

Multiple Choice

Refer to the diagram. Which tax system has the most built-in stability?

• A) \(T _ { 4 }\)
• B) \(T _ { 3 }\)
• C) \(T _ { 2 }\)
• D) \(T _ { 1 }\)

---

Definitions:

Target Cells

Cells that are specifically affected by hormones or other biochemical signals.

Water-soluble Hormones

Hormones that are soluble in water, allowing them to easily circulate in the blood and bind to cell surface receptors, triggering a response.

Free Hormones

Hormones that are not bound to carrier proteins in the blood, making them biologically active and able to interact with target cells.

Alpha Subunit-GTP

A component of G-protein involved in signal transduction across the cell membrane that becomes active when bound to GTP.