Indicate True (T) and False (F) Statements Below Regarding G-Protein-Coupled

Indicate true (T) and false (F) statements below regarding G-protein-coupled receptors (GPCRs). Your answer would be a five-letter string composed of letters T and F only, e.g. TTFFF.
( ) All GPCRs share a similar structure composed of seven transmembrane helices.
( ) All GPCR ligands (signal molecules) have a similar structure.
( ) GPCRs have only been found in multicellular organisms, consistent with their role in intercellular signaling.
( ) The hormone insulin is recognized by a GPCR on the surface of its target cells.
( ) Once activated, a GPCR molecule can activate multiple molecules of G protein to amplify the incoming signal.

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All GPCRs (found in multicellular as w...

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