Cell Signalling and Transduction
Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it

changes the shape and thus the enzymatic activity of the proteins involved
makes the receptor more likely to capture the signaling, molecule
allows hydrophilic signaling molecules to cross the plasma membrane
None of these

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Cell Signalling and Transduction
Cell signaling can be classified into

None of these
two distinct types based on the distance over which the signaling molecules act
three distinct types based on the distance over which the signaling molecules act
three distinct types based on the signaling molecules

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