Answer:
Channel protein.
Explanation:
Channel protein have gate that opens and close which allow the passage of polar substance or ions to move to permeable membrane of the cell by diffusion. They are water filled and allow the movementof charged molecules inside and outside the cell membrane i.e polar molecules move through non polar bilayer of the cell membrane.
The correct answer is: Decrease allosteric effects and cooperative binding of second messengers to their targets.
Scaffold proteins are considered regulatory proteins that affect many signal pathways. Some of their functions are:
• Regulation and coordination of positive and negative feedback signals
• Localizing signal components within the cell (in different cell compartments)
• Tethering signaling components (assembling signal components into complexes in order to increase signal efficiency).
I believe the answer is b.
Please refer to the definition above
