LIFESCI 2 Chapter Notes - Chapter 3: Guanine, Starch, Amylopectin
6 Apr 2017
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Chapter 3 video: macromolecules (large molecules made of small molecules linked covalently; polymers) Protein (most diverse; made of amino acids) Lipids (smaller than others) -> (fatty acids + glycerols: condensation/dehydration reaction. When polymers split into monomers, water needed -> hydrolysis reaction. Both condensation & hydrolysis occur in body at the same time: proteins. 3d shape; folding of molecule v. important for function formed by amino acids. Formed by c with 4 covalent bonds with: h atom, carboxyl group (function group), amino group (function group), r group (provides specific function for diff. amino acids) Hydrophobic & hydrophilic (+ve, -ve or 0) Amino acid polymerization: amino acids joined covalently(condensation) by peptide bonds between amino group & carboxyl group of 2 aa. 4 levels of protein structure: primary, secondary, tertiary & quaternary. Primary: condensation reactions, peptides bonds form aa sequence & order important for folding.
