Polysaccharides: Cellulose

The video tutorial discusses the structure and function of polysaccharides, focusing on cellulose. It explains the role of cellulose in plant cell walls, its monomer composition, and the importance of beta linkages for stability. The tutorial also covers why cellulose is indigestible in humans, classifying it as dietary fiber, and provides an overview of the nomenclature and numbering system for glucose linkages.

What is the primary focus of the video tutorial?

• The study of cellulose

• The formation of lipids

• The structure of proteins

• The synthesis of nucleic acids

Where is cellulose most abundantly found?

• In the cell walls of plants

• In the bones of mammals

• In the muscles of animals

• In the shells of crustaceans

What is the repeating unit in cellulose?

• Alpha D-glucose

• Beta D-glucose

• Inositol glucosamine

• Acetyl glucosamine

Why is cellulose indigestible by humans?

• It is too small to be broken down

• It contains alpha linkages

• It contains beta linkages

• It is soluble in water

What term is commonly used to describe indigestible polymers like cellulose?

• Protein

• Fiber

• Lipid

• Enzyme

What is the significance of the beta configuration in cellulose?

• It makes cellulose soluble in water

• It decreases the stability of cellulose

• It allows cellulose to be digested by humans

• It increases the stability and strength of cellulose

Which enzyme is responsible for breaking down alpha linkages in carbohydrates?

• Cellulase

• Maltase

• Amylase

• Protease

What is the main difference between cellulose and chitin?

• Cellulose is digestible, chitin is not

• Cellulose is made of glucose, chitin of inositol glucosamine

• Cellulose is found in animals, chitin in plants

• Cellulose is a protein, chitin is a carbohydrate

How are the carbons in glucose numbered for linkage purposes?

• According to the absolute numbering system

• Randomly

• Based on their position in the ring

• By their molecular weight

What type of linkage is found in cellulose?

• Alpha 1 to 4

• Beta 1 to 6

• Beta 1 to 4

• Alpha 1 to 6