What are some eukaryotic second messengers and what role(s) do they have in cells?

Question 1

What are some eukaryotic second messengers?

Answer 1

• Cyclic AMP (cAMP; cyclic adenosine monophosphate)
• Calcium ions (Ca2+)
• Inositol trisphosphate (IP3)
• Diacylglycerol (DAG) – lipid soluble, diffuses in plasma membrane

Question 2

second messengers are

Answer 2

• Small, nonprotein, water-soluble molecules or ions
• Transmits signal from plasma membrane to metabolic machinery in cytoplasm
• spread by diffusion

Question 3

what roll do second messengers have

Answer 3

initiate and coordinate intracellular signaling pathways

Question 4

Which of the following is NOT a common second messenger in cell signaling? 
A.	Ca2+
B.	Cyclic adenosine monophosphate
C.	Diacylglycerol
D.	Tyrosine
E.	Inositol trisphosphate

Answer 4

D. Tyrosine