The Pool Metaphor
In all three games of pool, you saw
how the sequence of events depended on the position
of each ball.
Biological signal transduction systems
are much more complex, where the events are governed
not only by position, but also size, concentration
and many other parameters.
Keep the pool metaphor in mind as we
start to look at biological signal transduction systems.
In the next activity you will look at
an ancient signal transduction pathway that natural
selection has preserved as a critical means of survival:
the fight or flight response.