Biochemistry
    • Branch of organic          • Biomolecules:
       chemistry that attempts      – Carbohydrates
       to explain chemical          – Lipids
       characteristics and          – Proteins
       reactions that occur in      – Nucleic Acids
       living organisms.
              Molecules to Metabolism
     • Metabolism –                    • Ex: Insulin
         – Collection of chemical         – Insulin is a protein hormone 
                                            that facilitates the movement of 
           reactions involving              glucose from the blood to the 
           biomolecules, that occur         inside of the cell
           during living processes        – Binds to hormone receptor 
         – Reactions occur in               outside of cell glucose 
                                            channels open
           predictable patterns           – Glucose in high concentration 
                                            outside of cell glucose 
                                            continues to diffuse into cell
                                          – Receptor molecule and protein 
                                            channel are both coded for by 
                                            DNA
                 Carbon-based Life
    • Organic molecule-         • Carbon always forms 4 
      contains carbon             covalent bonds with 
    • Ex: CO                      other elements
            2
    • Inorganic molecule- no    • Other elements 
      carbon                      common to organic 
    • Ex: H O                     molecules:
           2                       – H, O, N, P
    • All biomolecules are 
      organic
            Biochemical Compounds
    • Polymers of                • Pg. 54
       biomolecules are          • Fill in charts provided, 
       composed of                 both Table 2.1 and 2.2
       monomers.
       Metabolism Controlled by Enzymes
    • Molecular movement in  • Determining factors of 
      an aqueous                 Reactions:
      environment causes          – Identity of colliding 
      collisions among              molecules
      molecules                   – Orientation of colliding 
    • All reactions within          molecules
      cells-metabolism            – Speed of colliding 
                                    molecules
                               • Enzymes increase odds 
                                 of collisions reaction