Ptest4

Ptest4 - BCH 4054 November 6, 1998 PRE-TEST 4 GROUP NAME _...

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BCH 4054 November 6, 1998 PRE-TEST 4 GROUP NAME ____________________ This test is take-home and open book, and it is intended that all members of the group contribute to completing it. Only one copy is to be submitted by the group, and all members who participated should sign their names below. Test is due at the end of class on Monday, November 16. Please use dark pencil or ink and write legibly. ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ ________________________________ Page Points 1 ______ 2 ______ 3 ______ 4 ______ 5 ______ Total ______ Points (9) 1. Covalent modification of a protein by phosphorylation is a common method of regulating activity of the protein. At least three kinds of kinases have been implicated in regulation of cellular processes by hormones that do not enter the cell. Explain how a hormone can activate each type of kinase by identifying the intermediate signaling steps between the hormone and the kinase. (a) cyclic AMP dependent kinase (b) tyrosine kinase (c) protein kinase c (6) 2. To illustrate the importance of tautomeric structure in the Watson-Crick base pairing, draw base pair
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Ptest4 - BCH 4054 November 6, 1998 PRE-TEST 4 GROUP NAME _...

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