Structures

• Structure of proteins 


  •Polymer of amino acids

  •Joined by a peptide bond

  •Formed by condensation

  •1st structure - Polymer of a specific order of amino acids

  •2nd structure - polypeptide chain folds into either a A helix or B pleated sheets

  •3rd structure - the polypeptide chain folds further into a specific 3D structure
• Cellulose structure 


  Neatly stacked long chains

  Made up of B glucose

  Connected by hydrogen bonds

  Found in cell walls to give strength and structure to a cell

  Indigestible
• Functions and Properties of both Glycogen and Starch (6)


  Main role = energy storage compound , G in animals , S In plants

  Insoluble = doesn't affect wall pressure

  Branched /helical = compact , can fit into a small space

  Polymer of A glucose = provides glucose for respiration

  Branched = many ends for enzymes to attach and hydrolyze

  Large = cannot leave the cell
• Structure of Starch (3)

  Polysaccharide of A glucose

  1,4 1,6 glycocidic bonds

  Branches and coiled shape held by hydrogen bonds within the mollecule
• Structure of Glycogen (4)

  Polysaccharide of A glucose

  Branched and coiled shape held by Hydrogen bonds within the molecule

  1,4 1,6 glycacidic bonds

  Mostly 1,6 glycacidic bonds to give it a larger surface area
• Dipeptide structure 


  .

  
• Condensation of Sucrose 


  .

  
• Condensation of maltose

  .

  
• Condensation of lactose

  .

  
• Fructose molecule 


  .

  
• A Glucose


  .

  
• Galactose molecule


  .

  
• B Glucose 


  .

  
• Phospholipid structure 


  .

  
• Molecule of Glycerol


  .

  
• Structure of an amino acid 


  .

  
• Molecule of a fatty acid 


  .

  
• Condensation of a triglyceride


  .