Bonded signal molecules activate the cell permanently is not true regarding this model of signal transduction (Option A).
What is signal transduction?
Signal transduction refers to the cellular process by which different molecules are connected in a signaling pathway.
For example, the binding of a receptor with a ligand is a step in a transduction pathway, which may trigger the phosphorylation of a suitable substrate.
A signaling transduction pathway can finally end with the transcription of a particular gene product into the cell nucleus.
In conclusion, bonded signal molecules activate the cell permanently is not true in this signal transduction.
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