Use the following figure to answer the questions below.

-In the above diagram, the structure labelled B is a(n)
A)transcription factor.
B)activated relay molecule.
C)ligand.
D)plasma membrane receptor.
E)intracellular receptor.

Question

Use the following figure to answer the questions below.
 
-In the above diagram, the structure labelled B is a(n)
A)transcription factor. 
B)activated relay molecule. 
C)ligand. 
D)plasma membrane receptor. 
E)intracellular receptor.

Quizplus · Accepted Answer

The structure labelled B is located on the plasma membrane, indicating it is a plasma membrane receptor, which allows ligands to bind and activate intracellular signaling pathways. Transcription factors and intracellular receptors are not typically located on the plasma membrane. Activated relay molecules may be involved in intracellular signaling after a receptor is activated, but are not themselves receptors. A ligand is a molecule that binds to a receptor to activate a response, not a structural component of the receptor itself.

Use the Following Figure to Answer the Questions Below