types of sugars

Cards (23)

  • What is a disaccharide formed from?
    Two monosaccharides undergoing a condensation reaction
  • What are the three common monosaccharides mentioned?
    Glucose, fructose, and galactose
  • What type of bond is formed between two monosaccharides in a disaccharide?
    A glycosidic bond
  • What are the three examples of disaccharides provided?
    Sucrose, maltose, and lactose
  • What type of glycosidic bond is found in maltose?
    α-1,4 glycosidic bond
  • What is the test for reducing sugars called?
    Benedict's test
  • What is the first step in the Benedict's test for reducing sugars?
    Add 2 ml of the solution in a boiling tube
  • What happens to non-reducing sugars in Benedict's test?
    They show a negative result
  • What is the procedure to test for non-reducing sugars?
    Boil with dilute HCl, neutralize, and repeat Benedict's test
  • What is the purpose of boiling with dilute HCl in the non-reducing sugar test?
    To break down the sugar into monosaccharides
  • What is the role of sodium hydrogen carbonate in the non-reducing sugar test?
    To neutralize the solution after boiling with HCl
  • What is the result of a positive Benedict's test?
    The solution changes color, indicating the presence of reducing sugars
  • How do reducing sugars differ from non-reducing sugars in terms of testing?
    Reducing sugars react with Benedict's reagent, while non-reducing sugars do not
  • What is the chemical bond that breaks during the hydrolysis of a disaccharide?
    The glycosidic bond
  • What is the significance of the term "non-reducing" in the context of sugars?
    It indicates that the sugar does not reduce other substances in a chemical reaction
  • If a solution tests negative for reducing sugars, what should be done next to check for non-reducing sugars?
    Boil the solution with dilute HCl and then neutralize
  • What is the overall process to identify reducing and non-reducing sugars?
    Test with Benedict's reagent, then boil with HCl for non-reducing sugars
  • What is hydrolysis in the context of carbohydrates?
    It is the process of breaking down a disaccharide into monosaccharides using water
  • What is a condensation reaction in the context of carbohydrates?
    It is the process of forming a disaccharide from two monosaccharides by releasing water
  • What are monomers in the context of carbohydrates?
    Monomers are the basic building blocks of carbohydrates, such as monosaccharides
  • What are polymers in the context of carbohydrates?
    Polymers are large molecules formed by the linkage of many monomers
  • What are weak interactions in the context of molecular biology?
    Weak interactions are non-covalent interactions that stabilize molecular structures
  • What role do water molecules play in biochemical reactions?
    Water molecules participate in hydrolysis and condensation reactions