IB Bio Topic 3

What is the most common monosaccharide found in nature?

• Glucose

• Galactose

• Fructose

• Ribose

What is the difference between alpha-glucose and beta-glucose?

• Number of carbon atoms

• Orientation of the hydroxyl group

• Solubility in water

• Ability to be oxidized

Why is glucose a soluble molecule?

• It has a linear structure

• It contains several -OH groups

• It is a stable molecule

• It can be oxidized

Which polysaccharide serves as the primary storage form of glucose in plants?

• Starch

• Glycogen

• Cellulose

• Amylose

What is the major component of starch?

• Fructose

• Amylopectin

• Sucrose

• Cellulose

Where is glycogen primarily stored in animals?

• Liver and muscle cells

• Brain and heart cells

• Kidney and lung cells

• Skin and bone cells

Tags

NGSS.HS-LS2-3

What is the function of cellulose in plants?

• Energy storage

• Muscle contraction

• Cell wall support

• Blood glucose regulation

What type of bond is formed between glucose molecules in a condensation reaction?

• Glycosidic bond

• Peptide bond

• Phosphodiester bond

• Hydrogen bond

Which macromolecule is responsible for long-term energy storage in animals?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

What is the process called when glucose is broken down by losing electrons to carbon dioxide?

• Oxidation

• Hydrolysis

• Condensation

• Polymerization

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5