Final answer:
Facilitated diffusion uses transmembrane proteins with high specificity receptors for substance transport.
Step-by-step explanation:
The method of transport that uses transmembrane proteins with receptors of high specificity is facilitated diffusion. Facilitated diffusion involves the movement of substances down a concentration gradient with the assistance of integral membrane proteins. These proteins, called transport proteins, act as channels or carriers for specific substances, allowing them to move across the cell membrane. Unlike passive diffusion, facilitated diffusion requires the help of these proteins to transport certain molecules that would not easily or quickly diffuse across the membrane.
The specificity of the receptors on these transport proteins ensures that only particular molecules can bind and be transported. This process enables the selective movement of ions, sugars, and other polar molecules across the cell membrane, contributing to the maintenance of cellular homeostasis. Facilitated diffusion plays a crucial role in various physiological processes, ensuring the controlled and efficient transport of essential substances across cell membranes.