The Membrane Proteins That are Sensitive to Extracellular Materials Are

Question

The membrane proteins that are sensitive to extracellular materials are called
A)receptor proteins.
B)channel proteins.
C)carrier proteins.
D)anchor proteins.
E)identifier proteins.

Accepted Answer

Receptor proteins are specifically designed to recognize and bind with extracellular materials, such as hormones or neurotransmitters, and initiate cellular responses. Channel proteins allow for the selective transport of ions or other small molecules across the membrane, but they are not sensitive to extracellular materials in the same way that receptor proteins are. Carrier proteins facilitate the transport of larger molecules or ions across the membrane, but they are also not sensitive to extracellular materials. Anchor proteins stabilize the membrane and provide structural support, but they do not participate in cellular signaling pathways. Identifier proteins play a role in cell-to-cell recognition and identification, but they do not directly respond to extracellular materials.