Which of the Following Would NOT Occur During Signal Recognition

Multiple Choice

Which of the following would NOT occur during signal recognition?

A) The signal molecule binds to a specific receptor on the plasma membrane.
B) The signal molecule is transported into the cell by endocytosis.
C) The signal molecule is transported out of the cell by exocytosis.
D) The signal molecule remains outside the cell.
E) The signal molecule activates a transmembrane protein.