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GENERAL BOTANY Lecture 12

GENERAL BOTANY Lecture 12 - GENERAL BOTANY Lecture 12...

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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 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 GENERAL BOTANY Lecture 13 - Mitosis & Meiosis Part I I. Reproduction and the life cycle A.
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