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BIOCHEMISTRY 1005 EXAM
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BIOCHEMISTRY 1005 EXAM Phosphatidylinositol 3-Kinase (PI-3Kinase) can phosphorylate PI4,5 bis phosphate in the cell membrane to generate PI-3,4,5-tris phosphate. This compound, PI-3,4,5-tris phosph... ate can serve as a docking location for proteins with which of the following? Selected Answer: Pleckstrin homology domains Correct Answer: Pleckstrin homology domains Response Feedback: Identify protein domains and their roles in signaling cascades; specifically SH2 and pleckstrin homology domains. See figure 11.14 Question 2 The Na/K ATPase is an example of an ATP dependent ligand-gated channel that allows for the movement of sodium against its concentration gradient. When this transporter is active: Selected Answer: Na+ is transported out of the cell Correct Answer: Na+ is transported out of the cell Response Feedback: See figure 10.10 Name two examples each of passive diffusion, active transport, and facilitated transport via a channel or carrier and briefly summarize the differences between each Question 3 [Show More]
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