Question

question 4 of 10
what would happen if a membrane protein were unable to bind to a signaling molecule?
a. messages would not be sent to the inside of the cell.
b. polar molecules would be able to cross the membrane.
c. large molecules would not be able to enter the cell.
d. the cell nucleus would be filled with harmful chemicals.

Explanation:

Membrane proteins play a key - role in signal transduction. If they can't bind signaling molecules, signal transmission into the cell is blocked. Polar and large molecules may cross via other transport proteins. The cell nucleus is not directly affected by this binding failure in terms of being filled with harmful chemicals.

Answer:

A. Messages would not be sent to the inside of the cell.