Compare and contrast the signal transduction pathway involving cAMP with that involving phospholipids. What will be an ideal response?


Concepts to Consider: Role of G proteins; adenylyl cyclase versus phospholipase C; DAG
and IP3 as second messengers; protein kinases and calcium channels.

Biology & Microbiology

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From the aquatic systems below, where are heterotrophic Bacteria the MOST abundant?

A) coastal waters B) deep sea C) Sargasso Sea D) open ocean

Biology & Microbiology

All of the following events occur during mitosis EXCEPT ____

a. alignment of chromosomes at the spindle midpoint b. disappearance of the nuclear envelope c. formation of the spindle d. DNA synthesis e. separation of sister chromatids

Biology & Microbiology

The protein opsin and the molecule retinal combine to form the pigment found in rods called _________

Fill in the blank(s) with correct word

Biology & Microbiology

Life probably would never have emerged on Earth if the ancient atmosphere had been the same as the present one in regard to the content of ____.

A. carbon dioxide B. hydrogen C. oxygen D. nitrogen E. carbon monoxide

Biology & Microbiology