Answer Happy

The death of a cell can be initiated by the release of calcium ions from the endoplasmic reticulum. For this to occur a receptor protein on the surface of the matte stimulate to open and allow passage of the small polar cellum woms out of the ER and into the cytoplam The receptor on the ER credere what kind of receptor? Gated on channel Protein kinase receptor O G protein-coupled receptors Intracellular receptors None of the above

Release of glucose into the blood stream from cells in the liver can be initiated by epinephrine binding to the epinephrine receptor on the plasma membrane oftver cells. This cascade requires cAMP signaling activates protein kinase A and deactivates glycogen synthase. The dual effect of CAMP on protein kinase and glycogen synthase is an example of what? Ligand/receptor signal specificity Communication of surface signal to the nucleus O Amplification of second messenger signaling Second messenger signaling pathway crosstalk