Question

proteins in the cell membrane that bind hormones and relay messages into the interior of the cell
are known as carrier proteins
perform a function known as signal transduction
provide cell identification
are known as channel proteins
i dont know yet

Explanation:

1. Analyze each option:

• Carrier proteins: Transport substances across the membrane, not related to hormone binding and message relaying.
• Signal transduction: Membrane proteins (like receptors) bind hormones (or ligands) and transmit signals into the cell, matching the description.
• Cell identification: Done by glycoproteins (e.g., MHC, blood group antigens), not hormone - message relaying.
• Channel proteins: Allow passage of ions/molecules, not for hormone signaling.

1. Conclusion: The correct option is the one related to signal transduction.

Answer:

B. perform a function known as signal transduction