In the gpcr-adenylyl cyclase signal transduction system, which step initiates amplification?

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except