Final bio

A patient is unable to properly digest lactose due to an enzyme deficiency. Which specific bond is not being broken?

• Glycosidic bond

• Hydrogen bond

• Peptide bond

• Phosphodiester bond

A researcher tests two unknown sugar solutions. Solution A turns out to be glucose, while Solution B is fructose. Which property best distinguishes fructose from glucose?

• Fructose is insoluble in water.

• Fructose is a ketose while glucose is an aldose.

• Fructose cannot be used by the body for energy.

• Fructose contains fewer carbon atoms than glucose.

Why is glycogen more suitable than starch for energy storage in animals?

• It has fewer glycosidic linkages.

• It resists hydrolysis better than starch.

• It contains nitrogen atoms for quick breakdown.

• It is branched, allowing faster release of glucose units.

If a person suffers from galactosemia, what dietary restriction must be made?

• Avoid foods containing milk sugar

• Avoid foods high in starch

• Avoid foods high in sucrose

• Avoid high-protein foods

A nutritionist recommends fiber-rich foods for digestive health. Which carbohydrate is the main source of this fiber?

• Cellulose

• Glycogen

• Maltose

• Starch

Which disaccharide is commonly known as table sugar?

• Galactose

• Lactose

• Maltose

• Sucrose

A baker adds maltose to bread dough. What monosaccharides make up maltose?

• Galactose + Fructose

• Glucose + Fructose

• Glucose + Galactose

• Glucose + Glucose

Which polysaccharide serves as the structural component in the exoskeleton of crustaceans?

• Cellulose

• Chitin

• Glycogen

• Starch

Which of the following best explains why glucose is the primary energy source in humans?

• It is a disaccharide, making it more stable.

• It is the sweetest sugar and easy to digest.

• It has the fewest carbon atoms among sugars.

• It requires no digestion and is directly used by cells.

In the human body, glycogen is mainly stored in which organs?

• Brain and lungs

• Kidneys and heart

• Liver and muscles

• Pancreas and stomach