Cell Communication Quiz

G-proteins are always in an active state and directly bind to the ligands for signal transduction

G-proteins are responsible for isolating receptors using affinity chromatography

G-proteins are only involved in the discovery of GPCRs and do not play a role in signal transduction

G-proteins can be in active or inactive states and help in signal transduction by hydrolyzing GTP (correct)

Ligands are responsible for isolating receptors using affinity chromatography

Ligands act as GTP-binding proteins to regulate signal transduction

Ligands directly initiate the response in the target cell without the involvement of receptor proteins

Ligands are signaling molecules that bind to receptor proteins to initiate the process of signal transduction (correct)

Endocrine (correct)

Paracrine

Synaptic

Autocrine

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