Monosaccharides and Disaccharides Concepts

The video tutorial discusses the structure and properties of disaccharides, focusing on maltose, lactose, and sucrose. It explains how these disaccharides are formed from monosaccharides and the specific glycosidic bonds involved. The digestion process of each disaccharide is covered, highlighting the enzymes responsible for breaking them down. The video also distinguishes between reducing and non-reducing sugars, with sucrose being a non-reducing sugar due to its unique bond structure.

What type of bond connects two monosaccharides to form a disaccharide?

• Ionic bond

• O-glycosidic bond

• Hydrogen bond

• Peptide bond

Which two monosaccharides make up maltose?

• Beta D-galactose and Alpha D-glucose

• Alpha D-glucose and Alpha D-glucose

• Alpha D-glucose and Fructose

• Alpha D-glucose and Beta D-glucose

What enzyme is responsible for breaking down maltose in the small intestine?

• Lactase

• Maltase

• Sucrase

• Amylase

Lactose is composed of which two monosaccharides?

• Beta D-galactose and Fructose

• Alpha D-glucose and Alpha D-glucose

• Beta D-galactose and Alpha D-glucose

• Alpha D-glucose and Fructose

What is the enzyme called that breaks down lactose in humans?

• Maltase

• Lactase

• Sucrase

• Beta-galactosidase

Sucrose is made up of which two monosaccharides?

• Alpha D-glucose and Beta D-galactose

• Alpha D-glucose and Beta D-fructose

• Beta D-galactose and Alpha D-glucose

• Alpha D-glucose and Alpha D-glucose

What type of glycosidic linkage is found in sucrose?

• Alpha 1-2

• Beta 1-4

• Beta 1-2

• Alpha 1-4

Which of the following is a non-reducing sugar?

• Galactose

• Sucrose

• Lactose

• Maltose

What characteristic differentiates reducing sugars from non-reducing sugars?

• Ability to dissolve in water

• Presence of an anomeric carbon

• Ability to form glycosidic bonds

• Presence of a free aldehyde or ketone group

Which enzyme breaks down sucrose in the small intestine?

• Maltase

• Amylase

• Sucrase

• Lactase