What is crosstalk in cellular signaling pathways, and how do insulin and epinephrine pathways demonstrate this phenomenon?

• A. Crosstalk refers to the interaction between different signaling pathways, and insulin and epinephrine pathways interact by modifying each other's cellular responses.
• B. Crosstalk is the amplification of signals within a single pathway, and insulin and epinephrine pathways amplify their own signals independently.
• C. Crosstalk is the isolation of signaling pathways, and insulin and epinephrine pathways do not interact.
• D. Crosstalk is the suppression of signaling pathways, and insulin and epinephrine pathways suppress each other's signals.

Answer: (A)