RESPIRAT12 - c Lower activation energy III Where do the...

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Jim Bidlack - BIO 1304 GENERAL BOTANY Lecture 12 - Metabolism - Putting It All Together I. Overview of metabolism A. Photosynthesis 1. Non-cyclic photophosphorylation 2. Calvin cycle B. Respiration 1. Glycolysis 2. Krebs cycle 3. Oxidative phosphorylation II. How do all these reactions occur? A. What we're up against - Thermodynamics 1. First law - conservation 2. Second law - entropy B. We need something to drive metabolic reactions - CATALYSTS!! 1. Enzymes a) Function as catalysts b) Neither created nor destroyed in the reaction
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Unformatted text preview: c) Lower activation energy III. Where do the enzymes come from? A. Enzymes are proteins B. Protein synthesis - DNA makes RNA makes protein C. Genetic code: AT & GC (Note: in RNA, U=T) D. Triplets - AUG = Methionine or start ; UUU = Phenylalanine ; UAA = stop E. Many, many triplets make a protein. ...i.e., an enzyme IV. Metabolism A. DNA makes RNA makes protein. ...enzymes B. Enzymes regulate metabolism C. Metabolism 1. Photosynthesis 2. Respiration 3. Secondary...
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