Plasma membranes and some internal membranes have which of the following proteins,which trigger a change in the cell's activities in response to a stimulus?
A) Receptor proteins
B) Transport proteins
C) Adhesion proteins
D) Transmembrane proteins
E) Peripheral proteins

Question

Plasma membranes and some internal membranes have which of the following proteins,which trigger a change in the cell's activities in response to a stimulus?  
A) Receptor proteins
B) Transport proteins
C) Adhesion proteins
D) Transmembrane proteins
E) Peripheral proteins

Quizplus · Accepted Answer

Receptor proteins are specialized proteins that are found in plasma membranes and some internal membranes. These proteins bind with specific ligand molecules in response to a stimulus and trigger a series of changes in the cell's activities. These changes include activation of signaling pathways, changes in gene expression, and alterations in protein activity. Therefore, receptor proteins are the best choice for triggering a change in the cell's activities in response to a stimulus.

Plasma Membranes and Some Internal Membranes Have Which of the Following