Which of the Following is CORRECTLY Matched with Its Function

Question

Which of the following is CORRECTLY matched with its function?
A) cell identity molecules - are primarily steroids
B) receptor proteins - move specific ions or molecules using ATP
C) carrier proteins - move bound ions or molecules from one side of the membrane to the other
D) channel proteins - catalyze chemical reactions inside the cell
E) peripheral proteins - penetrate the lipid bilayer from one surface to the other

Accepted Answer

Carrier proteins are responsible for actively transporting ions or molecules from one side of the membrane to the other. Channel proteins, on the other hand, form passageways for specific ions or molecules to passively diffuse across the membrane. Receptor proteins detect and respond to specific ligands, while peripheral proteins are located at the surface of the membrane and interact with other molecules, but do not penetrate the lipid bilayer. Cell identity molecules are typically glycoproteins or glycolipids that help cells differentiate from one another.