Understanding Disaccharides

This video tutorial covers disaccharides, focusing on sucrose, its structure, and the processes of dehydration synthesis and hydrolysis. It also introduces other disaccharides like lactose and maltose, and explains the role of enzymes such as lactase in breaking down carbohydrates. The video highlights the chemical formulas and reactions involved in forming and breaking down these sugars.

What are the two monosaccharides that make up sucrose?

• Fructose and Maltose

• Glucose and Fructose

• Glucose and Galactose

• Lactose and Glucose

What type of bond connects glucose and fructose in sucrose?

• Hydrogen bond

• Glycosidic bond

• Peptide bond

• Ionic bond

What is the process called when water is removed to form sucrose?

• Dehydration synthesis

• Reduction

• Hydrolysis

• Oxidation

What happens to sucrose during a hydrolysis reaction?

• It remains unchanged

• It forms a new disaccharide

• It breaks down into glucose and fructose

• It combines with another sucrose molecule

Which disaccharide is known as milk sugar?

• Fructose

• Maltose

• Sucrose

• Lactose

What are the components of maltose?

• Two units of glucose

• Fructose and galactose

• Glucose and fructose

• Glucose and galactose

What enzyme is responsible for breaking down lactose?

• Lactase

• Maltase

• Sucrase

• Amylase

What does the suffix 'ose' indicate in a molecule's name?

• It is a carbohydrate

• It is an enzyme

• It is a protein

• It is a lipid

What does the suffix 'ase' indicate in a molecule's name?

• It is a nucleic acid

• It is an enzyme

• It is a lipid

• It is a carbohydrate

Which of the following is NOT a disaccharide?

• Maltose

• Lactose

• Sucrose

• Glucose