problem set 4

problem set 4 - Problem Set #4 Covering Chapters 7-12 of...

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Problem Set #4 Covering Chapters 7-12 of LIFE BILD1 Wi08 PROBLEM 1. Transport through protein channels You are studying a new strain of bacteria that can use as a food source the 5-carbon sugar, ribose. In particular, you are interested in determining how this bacteria takes the ribose into the cell. Based on your understanding of prokaryotic biology, you suspect that a transport protein is involved. However, you are not certain if this transport protein is taking up the ribose via FACILITATED DIFFUSION or if it is using an ACTIVE TRANSPORT mechanism. Define Facilitated Diffusion and Active Transport and then describe a simple experiment using these bacteria that will allow you to distinguish between these two possible transport methods. PROBLEM 2. Signal transduction Take a close look at the signal transduction pathway for both G-protein coupled receptors and tyrosine kinase receptors. How is the signal transmitted across the plasma membrane for these two pathways? How is the signal transmitted into the cytoplasm for these two
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problem set 4 - Problem Set #4 Covering Chapters 7-12 of...

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