1 SURVEY OF BIOCHEMISTRY Introduction to Metabolism

2 Metabolism is complex

3 Nutrition: Food Intake & Use Autotrophs –Chemilithotrophs: get E from oxidation of inorganic compounds –Photoautotrophs: get E from photosynthesis Heterotrophs: E from oxidation of organic compounds

4 Common Vitamins

5 Key Minerals Req’d for a variety of metabolic processes Obtainable from diet and other sources

6 Metabolism Overview

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8 Where does metabolism occur?

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10 Bioenergetics Bioenergetics deals with the release, storage and use of energy in biological systems. See board for notes… Study Section 1-3

11 High Energy Compounds

12 ATP - a Ubiquitous High Energy Compound

13 Coenzyme A: A Thioester Learn to draw this!

14 Electron Carriers in Redox Reactions NAD +, NADP +, and FAD are oxidized forms NADH, NADPH, and FADH 2 are reduced forms Learn to draw NADH and NADPH

15 Electron Carriers in Redox Reactions FAD NAD +, NADP +, and FAD are oxidized forms NADH, NADPH, and FADH 2 are reduced forms Learn to draw this!

16 Redox Reactions Half-cells Which species is which? –What is an oxidizing agent? –What is a reducing agent? –What is being oxidized? –What is being reduced? Nernst Equation know what this is in general See board for notes Remember concepts in general Do not worry about calculations or applications for Exam #2

17 Reduction Potential