Signal amplification is essential for many signaling pathways, ensuring that a robust response can be induced by even a small

Question

Signal amplification is essential for many signaling pathways, ensuring that a robust response can be induced by even a small amount of ligand. Does amplification occur at these two specific steps during GPCR signaling? Explain why it does or does not occur at each step.
• G protein activates adenylyl cyclase.
• Protein kinase A activates CREB

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