Answer:
Gray eyes may be called “blue” at first glance, but they tend to have flecks of gold and brown. And they may appear to “change color” from gray to blue to green depending on clothing, lighting, and mood (which may change the size of the pupil, compressing the colors of the iris
Punctuated equilibrium is the theory that species stay fairly constant until a natural disaster happens forcing them to rapidly evolve
Answer:
second messenger cascade
Explanation:
Second messenger cascade is activated by the NE beta receptor which then activates the G protein. G protein in turn activates the enzyme responsible for converting ATP to cAMP i.e adenylyl cyclase. When the level of cAMP reaches a certain level, the enzyme protein kinase is released. The enzyme phospholipase is released as the G proteins get active and breaks down the phospholipid membrane into two secondary messenger molecule.
