please be very descriptive and clear a Why have one signalin

please be very descriptive and clear.

a) Why have one signaling pathway control both adhesion and metabolism instead of having one system to control adhesion and a separate system to control metabolism (6 pts)? What is one benefit of this approach (1pt)? One drawback (1pt)?

b) Do you think that quorum sensing would positively or negatively regulate T3SS expression in EPEC (2 pt)? Explain your reasoning.