Week_4 bio si review

Week_4 bio si review - Pavika Varma...

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bisc220sileaders@gmail.com www.usc.edu/si Bio 220: Week 4 (January 31-February 4) 1. a) What is the only way a ligand can alter cell function? b) This interaction causes activation of a . What is their role and what are some common examples? c) What event does the above-mentioned molecule trigger? What proteins are essential to this process, what is their function, and how do they cause a cellular response? 2. T/F: A transduction cascade is limited in the number of cell responses it can activate. T/F: A phosphodiesterase removes phosphate groups. T/F: IP3 can only be derived from the G-protein coupled receptor system. T/F: Calcium releases IP3 from intracellular stores. T/F: Calcium binds to calmodulin which is a kinase that triggers calcium-dependent cascades T/F: Calcium moves passively (1) out of the cell (2) into the mitochondria or (3) into the SER (4) all of the above (5) none of the above 3. Indicate step by step how the G-protein coupled receptors work. 4.
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This note was uploaded on 03/08/2011 for the course BISC 220 taught by Professor Mcclure during the Spring '09 term at USC.

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Week_4 bio si review - Pavika Varma...

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