Understanding Carbohydrates

What is the basic formula for carbohydrates?

• C6H12O6

• C2H4O2

• CH2O

• C3H6O3

Which monosaccharide is most commonly used as a fuel molecule in cells?

• Glucose

• Fructose

• Sucrose

• Galactose

What structural difference distinguishes glucose from fructose?

• Fructose has more carbon atoms than glucose.

• Glucose has more hydrogen atoms than fructose.

• Glucose has a carbonyl group on the second carbon, fructose on the first.

• Glucose has a carbonyl group on the first carbon, fructose on the second.

What process joins two monosaccharides to form a disaccharide?

• Dehydration synthesis

• Hydrolysis

• Oxidation

• Reduction

Which of the following is a common disaccharide found in milk?

• Lactose

• Fructose

• Sucrose

• Maltose

What is the primary function of starch in plants?

• Photosynthesis

• Protein synthesis

• Energy storage

• Structural support

Which polysaccharide is known as animal starch?

• Starch

• Glycogen

• Chitin

• Cellulose

What is the main structural component of plant cell walls?

• Glycogen

• Starch

• Chitin

• Cellulose

Which organisms have symbiotic bacteria to help digest cellulose?

• Fungi

• Insects

• Cows

• Humans

Where is chitin commonly found?

• In plant cell walls

• In the exoskeletons of arthropods

• In animal muscles

• In human bones