Monosaccharides and Glycosidic Bonds

This video tutorial explains the formation of disaccharides from monosaccharides, focusing on the reaction between two alpha glucose molecules to form maltose. It introduces the concept of condensation reactions, where a water molecule is produced, and glycosidic bonds, specifically the 1-4 glycosidic bond. The video also covers hydrolysis reactions, which break disaccharides back into monosaccharides, and introduces other disaccharides like sucrose and lactose.

What is the main difference between alpha and beta glucose?

• The presence of a glycosidic bond

• The number of carbon atoms

• The type of reaction they undergo

• The position of the hydroxyl group on carbon one

What is formed when two alpha glucose molecules react together?

• Maltose

• Sucrose

• Lactose

• Fructose

What is a condensation reaction?

• A reaction that absorbs water

• A reaction that forms a water molecule

• A reaction that breaks down molecules

• A reaction that involves oxygen

What type of bond is formed between two glucose molecules in maltose?

• Hydrogen bond

• Glycosidic bond

• Peptide bond

• Ionic bond

What is a 1-4 glycosidic bond?

• A bond between carbon two and carbon three of two glucose molecules

• A bond between carbon one and carbon four of two glucose molecules

• A bond between two hydrogen atoms

• A bond between two oxygen atoms

What happens during a hydrolysis reaction?

• A glycosidic bond is created

• An enzyme is deactivated

• A molecule of water is formed

• A disaccharide is broken down into monosaccharides

Which enzyme typically carries out hydrolysis reactions in cells?

• Amylase

• Lipase

• Enzymes specific to the reaction

• Protease

Which monosaccharides form sucrose?

• Fructose and galactose

• Glucose and glucose

• Glucose and fructose

• Glucose and galactose

Which monosaccharides form lactose?

• Glucose and fructose

• Fructose and galactose

• Glucose and galactose

• Glucose and glucose

What will the next video focus on?

• Enzymes

• Polysaccharides

• Disaccharides

• Monosaccharides