STARCH

• STARCH MONOMER?

  alpha glucose
• STARCH BOND BETWEEN MONOMERS?

  1-4 glycosidic bonds in amylose

  1-4, 1-6 in amylopectin
• STARCH FUNCTION?

  glucose store
• STARCH LOCATION?

  plant cells (e.g. chloroplast)
• STARCH STRUCTURE?

  2 polymers

  AMYLOSE: unbranched helix

  AMYLOPECTIN: branched molecule
• STARCH HOW STRUCTURE LEADS TO FUNCTION?

  • Helix can compact to fit a lot of glucose in a small space
  • Branched structure increases SA for rapid hydrolysis
  • Insoluble so won't affect water potential
• ANOTHER ADDITIONAL CHARACTERISTIC OF STARCH?

  Large - cannot diffuse out of cell