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Unformatted text preview: 9/26/2007 1 Building blocks are more reduced than the precursor metabolites 1. True 2. False 1 T ru e F a lse 0% 0% Class Matters Group study guides 2 MCB 3023, Fall 2007 Lecture 14 3 Chapter 7:Biosynthesis -Pathways to building blocks Chapter 8 Building Macromolecules I- replication-DNA. General features of Biosynthetic pathways Energetics Regulation 4 Use of activated groups such as thioester, acylphosphate, carbamoyl phosphate Group activation takes place at the expense of ATP 5 expense of ATP The building blocks are more reduced that the 13 intermediates NEED reducing power NADPH and it costs ATP to make NADPH Why two reducing agent NAD+/NADH NADP+/NADPH 6 9/26/2007 2 General features of Biosynthetic pathways Energetics Regulation 7 What is feedback regulation? 8 9 10 Assimilatory processes : incorporate elements into organic forms, requiring energy example: ?...
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- Spring '08