Which of the following statements correctly describes the process of GPCR signaling? The GPCR activation is reversible after the signal of the ligand diminishes.
O The membrane-embedded enzyme uses GTP as a secondary messenger to initiate gene expression.
O The ligand attaches to both the GPCR and the membrane-embedded enzyme to activate the GPCR pathway.
O The ligand-bound GPCR sends a GTP molecule to an enzyme in the membrane and switches it into an active
state.

B) The membrane-embedded enzyme uses GTP as a secondary messenger to initiate gene expression.

Explanation:

Due to the fact G Protein Coupled Receptors (GPCRs) perceive many extracellular signals and transduce them to heterotrimeric G proteins, which further transduce these signals intracellular to appropriate downstream effectors and thereby play an important role in various signaling pathways

If im wrong so be it >:)

straight probes are used primarily for measuring flow as it is approaching the test area. its geometry allows the probe to be mounted so that it is in the direct line of airflow.