1. In a normal axon, the action potential moves in one direction, from cell body to axon terminal, without stopping or reversing course. Based on the function of the Na+
channel:
a. Why does an action potential move in an all-or-nothing fashion down the length
of an axon without stopping?
b. What mechanism of the Na+ channel prevents the action potential from
reversing course?

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

Which type of mutation occurs in reproductive cells and can be passed to offspring? somatic mutation germline mutation point mutation frameshift mutation

How is synaptic signaling different from paracrine signaling?