Describe the process of carrier-mediated transport.
A)In carrier-mediated transport,vesicles form by pinching the plasma membrane to transport material out of the cell.
B)In carrier-mediated transport,receptor proteins bind to a ligand that causes the internalization of the ligand-receptor complex into the cell.
C)In carrier-mediated transport,integral membrane proteins bind ions or molecules and transport them across the membrane.
D)In carrier-mediated transport,peripheral membrane proteins bind ions or molecules and pass them along the surface of the plasma membrane.
E)In carrier-mediated transport,channel proteins open allowing water-soluble ions and molecules to pass into and out of the cell.

Question

Quizplus · Accepted Answer

In carrier-mediated transport, integral membrane proteins bind ions or molecules and transport them across the membrane. This process may involve conformational changes in the carrier protein, and can be both facilitated and active transport. Channel proteins (answer E) are another type of membrane protein involved in transport, but they do not bind to specific molecules and instead allow ions and small molecules to passively diffuse across the membrane. Answers A, B, and D describe different processes of endocytosis rather than carrier-mediated transport.

Describe the Process of Carrier-Mediated Transport