feb 11, chapter 23 and 18 - The Phylogenetic Tree of...

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February 11, 2007 The Phylogenetic Tree of Eukaryotes Fig 23.8 Archaeplastida= ancient Will not study rhizaria Protista= single cell, unicellular microorganism Chapter 8 Cellular energy Derived from Chemicals: metabolism What is metabolism? The biochemical reactions in a cell. Metabolism involves energy shifting Oxidation Losing e- or H (=e- + H+) e donor (higher energy) oxidation (electron is lost) Oxidized Reduction Accepting e- or H Reduced (higher energy) reduction e acceptor Energy is stored in chemical bonds Larger molecules are higher in energy; they have higher chemical bonds(reduced) Smaller molecules are lower in energy (oxidized) Decreasing arrow (arrow doing down): Catabolism (larger molecules breaking down to smaller molecules, Oxidation, Exergonic (generating energy, energy is coming out of the reaction. Ex: digestion) Increasing arrows: Biosynthesis (Anabolism, smaller molecules forming larger molecules), Reduction, Endogonic. Ex: eating beef…
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How energy is conserved?
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