digestive enzymes

Cards (13)

  • Enzymes

    Catalyze chemical reactions, speed them up
  • Enzymes
    • Large protein molecules
    • Have a groove on their surface called the active site
    • The active site is where the substrate attaches
  • Substrate
    The molecule that the enzyme breaks down
  • Substrate fits into active site

    Enzyme can break down substrate
  • Substrate does not fit into active site

    Enzyme cannot break down substrate
  • Lock and key theory

    Enzymes are specific, the substrate must fit perfectly into the active site
  • Proteins
    Long chains of chemicals called amino acids
  • Carbohydrases
    • Enzymes that break down carbohydrates
    • Amylase breaks down starch
  • Starch
    A carbohydrate consisting of a chain of glucose molecules
  • Lipases
    • Enzymes that break down lipids
    • Found in the pancreatic fluid and small intestine
  • Lipids
    Molecules consisting of glycerol attached to three fatty acids
  • Lipid digestion

    Lipase breaks down lipids into glycerol and fatty acids
  • Bile
    • Made in the liver, stored in the gallbladder
    • Not an enzyme, but helps speed up lipid digestion by lipase
    • Converts large lipid droplets into smaller droplets, increasing surface area
    • Alkaline, neutralizes stomach acids in the small intestine