Please Define the Following Key Terms

question 32

Short Answer

Please define the following key terms. Show Who? What? Where? When? Why Important?
-theory of relativity

---

Definitions:

Signal Transduction Pathways

Systems of molecules in a cell that work together to transmit signals from the cell's surface to its interior, triggering a response.

Polar Signaling Molecules

Molecules that are involved in the transmission of signals across cell membranes and can interact with polar environments due to their electrical charge.

Nonpolar Signaling Molecules

Chemical messengers that are hydrophobic and can diffuse directly through the lipid bilayer of cell membranes to elicit a response within the cell.

G Protein-Linked Receptor

A class of membrane receptors that, when activated by ligands, trigger a signal transduction pathway involving G proteins, influencing cell response.