Summary

These notes cover the biochemistry of macromolecules, including carbohydrates, lipids, nucleic acids, and proteins. They detail the components, functions, and indicators for each class of macromolecules. The notes are suitable for secondary school biology students.

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Chap. 2 u r p le a ll p C o p y d i n g l u Lecture 3 font ! ! i n c h l i g h t s ! ! h i g...

Chap. 2 u r p le a ll p C o p y d i n g l u Lecture 3 font ! ! i n c h l i g h t s ! ! h i g 3 yellow Part Biochemistry of Macromolecules I. Carbon Compounds: A. Macromolecules: large compounds found in living cells. 1. Polymerization: making large compounds from monomers. a. monomer: small unit b. polymer: large unit 2. 4 groups: a. Carbohydrates: C,H2,O (monomer ratio= ) 1. Main energy source a. monomer: monosaccharide b. polymer: polysaccharide 2. Indicators: benedicts: monosaccharide Iodine: polysaccharide 3. Saccharide=sugar a. monosaccharide=glucose, fructose C6H12O6 Glycosidic Bond: holds glucose molecules together b. disaccharide=glucose +glucose= maltose C12 H22 O11 Dehydration synthesis : H+ combines with OH- H2O lost c. Polysaccharide: Starch animal starch in liver: glycogen plant starch: cellulose To return to a monosaccharide… Hydrolysis: H2O molecule is added. Polysaccharide Monosaccharides b. Lipids: C & H & O (not 1:2:1) 1. Fats(triglyceride), oils and waxes 2. Store energy Ester Bond holds lipids together. a. monomer: 3 fatty acids+glycerol b. polymer: lipid Indicator: brown paper c. Nucleic Acid: C,H,O,N,P 1. Store genetic info. to make protein 2. DNA or RNA DNA bases: A,T,C,G RNA bases: A,U,C,G a. monomer: nucleotide Hydrogen Bond: b. polymer: nucleic acid holds nucleic acids together. d. Proteins: C,H,O,N 1. Control rate of reactions, regulate cell processes,form bones and muscles, and transport materials. ex. skin, hair & nails a. monomer: amino acid b. polymer: dipeptide,protein- polypeptide chain twists & folds. 2. Indicator: biuret Peptide Bonds: link amino acids together to make a polypeptide chain. ino a m t i f ies i en d p g rou d. R u s e acid

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