ISB 202 Lecture 5 - ISB 202 Lecture 5 Macromolecules and...

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ISB 202 Lecture 5 22/01/2008 10:19:00 Macromolecules and Cells Macromolecules -Proteins -Nucleic Acids -Carbohydrates -Lipids Proteins -complex macromolecules that are polymers of many subunits called amino acids the covalent bond liking two amino acids together is called a peptide bond the assembled polymer is called a polypeptide -ase; the suffix of enzymes Nucleic Acids - are very long macromolecules that store information nucleotides o each nucleotide has 3 parts     1. A sugar o 2. A posphate group o 3. A nitrogen containing base
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DNA o Macromolecule  o Several functions Long Term storage of information: ”blueprints” Control cells Can replicate Is copied to produce proteins o Can mutate DNA Structure o DNA molecule is shaped like a spiral staircase or twisted ladder o “The double Helix” the outer parts of the ladder are made of sugars the steps of the ladder are made of pairs of nitrogen bases  How is DNA stored? o In Chromosomes What is the relationship between DNA and a “gene”/ o  Gene is a region of DNA that influences a particular characteristic Hispotne Protein Structure Carbohydrates -are macromoecules that make up the structural framwork of cells and plat a  critical role in evergy storage
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ISB 202 Lecture 5 - ISB 202 Lecture 5 Macromolecules and...

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