Unit 2 crb.2,crb.7, crb.8

Which carbohydrate serves as a structural component in plant cell walls, providing rigidity and strength?

• Starch

• Cellulose

• Glycogen

• Sucrose

 What type of linkages connect the glucose molecules in cellulose, making it indigestible by humans?

• Alpha-1,4-glycosidic bonds

• Beta-1,4-glycosidic bonds

• Peptide bonds

• Beta-1,4-glycosidic bonds

Which carbohydrate functions as the primary energy storage molecule in plants?

• Cellulose

• Glycogen

• Starch

• Glucose

In humans, where is glycogen primarily stored and used for quick energy release?

• In the cell walls of plant cells

• In the bloodstream

• In the form of fat deposits

• In the liver and muscles

How do the structures of starch and cellulose differ, even though both are composed of glucose units?

• Both contain beta-1,4 linkages

• Both are found in animal tissues

• Starch has alpha-1,4 linkages, while cellulose has beta-1,4 linkages

• Starch is a structural component, while cellulose is a storage carbohydrate

Which of the following best describes the process of dehydration synthesis?

• Breaking down complex molecules into simpler ones with the addition of water

• Combining smaller molecules to form a larger one while removing water

• The breakdown of carbohydrates into glucose molecules

• The addition of water to split a molecule into two smaller molecules

During dehydration synthesis, what type of bond is formed between molecules?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Covalent bond through the loss of water

What is the primary function of hydrolysis in biological systems?

• To combine small molecules

• To release energy

• To break down large molecules into smaller ones by adding water

• To create complex polymers

In the digestion of carbohydrates, what role does hydrolysis play?

• Combining glucose molecules to form starch

• Dehydrating molecules to form cellulose

• Breaking down polysaccharides into monosaccharides with the addition of water

• Combining lipids to form triglycerides

 In which biological macromolecules, such as proteins and nucleic acids, does hydrolysis play a crucial role?

• Carbohydrates

• Lipids

• Proteins and nucleic acids

• Cellulose