Lecture 3 - Bio 121 Lecture 3 Biological Molecules A....

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Bio 121 Lecture 3 – Biological Molecules A. Variation in structure (key to diversity) a. All contiain H,O, and C, something N, and P (organic molecules of life) b. Polymers – long chains of similar subunits called monomers contained in each cell by the thousands b.i. Differences are due to variation in sequencing of monomers b.ii. They are the diversity (polymers are different) and unity (monomers are the same) of life B. Carbohydrates (CHO) – Usually (CH 2 O) n ratio a. Functions a.i. Source of energy (exp. glucose) a.ii. Energy storage (exp. starch) a.iii. Structural components (cellulose is 40% of plant cell wall)(chitin) b. Monosacharides b.i. 3C – Triose (glyceraldehydes) C3H6O3 b.ii. 5C – pentose (ribose C5H10O5), deoxyribose C5H10O4 b.iii. 6C – hexose (glucose) C6H12O6 c. Disaccharides c.i. Sucrose (glucose + fructose) c.ii. Maltose (glucose + glucose) c.ii.1. Glucose + Glucose Maltose + H2O c.ii.1.a. Dehydration reaction d. Polysaccharides d.i. Starch (glucose monomers)
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This note was uploaded on 03/12/2012 for the course BIO 121 taught by Professor Minchella during the Fall '10 term at Purdue University-West Lafayette.

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Lecture 3 - Bio 121 Lecture 3 Biological Molecules A....

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