Select from the following the statements that are most likely to be valid (there may be more than one valid statement)

A. A single signal may lead to more than one response in the cell
B. A single signal may lead to the the activation of more than one intracellular signaling component or cascade
C. Different signals originating from the plasma membrane can be integrated by cross-talk between different signaling pathways inside the cell
D. Signals can only be turned on and off by phosphorylation of tyrosine residues.


Ans:
A. A single signal may lead to more than one response in the cell
B. A single signal may lead to the the activation of more than one intracellular signaling component or cascade
C. Different signals originating from the plasma membrane can be integrated by cross-talk between different signaling pathways inside the cell

Biology & Microbiology

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