Define the term second messenger. List the types of second messengers in the reading and slide show then briefly describe the role cAMP molecules in signaling pathways.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

hey, what do you need . just post the question and i may be able to you : )

i dont know it at allnow im just getting points at this pint