2. What proteins (2) produced in response to growth factor signaling? are

18

98. The correct sequence of cell signaling is

F.28.   How will phosphorylation of serine change the pKa of Arg, increase, decrease, or no change

4. PFK-1 is tightly regulated with multiple potent allosteric regulators. Name three of these regulators and explain how they influence the activity of PFK-1.

9. Describe the steps in the G-protein coupled receptor/adenylyl cyclase/CAMP - signaling pathway. What are examples of physiological processes in the body that use this pathway? What are two toxins that activate this pathway and prevent it from being turned off?

17. Explain the concepts of specificity, competition, and saturation as they relate to membrane receptors.  Explain how membrane receptors show specificity, competition, saturation. Some key concepts which relate to this question are first messengers, binding sites, and ligands.

7. The following happens when a G-protein-coupled receptor activates a G protein? A. The B subunit exchanges its bound GDP for GTP. B. The GDP bound to the a subunit is phosphorylated to form bound GTP. C. The a subunit exchanges its bound GDP for GTP. D. It activates the a subunit and inactivates the By complex. 8. Which of the following statements is true? A. MAP kinase is important for phosphorylating MAP kinase kinase. B. PI 3-kinase phosphorylates a lipid in the plasma membrane C. Ras becomes activated when an RTK phosphorylates its bound GDP to create GTP D. STAT proteins phosphorylate JAK proteins, which then enter the nucleus and activate gene transcription 9. A cell can crawl through a tissue because of the proteins that can transmembrane bind to fibronectin outside of the cell. A. Integrin B. Collagen C. Gap junction D. Claudin 10. Which of the following genetic changes cannot convert a proto-oncogene into an oncogene A. A mutation that introduces a stop codon immediately…