Carbohydrates Video Lesson

Why is carbon considered the 'ultimate biological Lego brick'?

• It has four valence electrons, allowing it to form stable bonds.

• It can form two bonds at a time.

• It cannot bond with other carbon atoms.

• It is the most abundant element in the universe.

What is the chemical signature of carbohydrates?

• A 2:1:2 ratio of carbon, hydrogen, and oxygen.

• A 1:2:1 ratio of carbon, hydrogen, and oxygen.

• A 1:1:1 ratio of carbon, hydrogen, and oxygen.

• A 1:3:1 ratio of carbon, hydrogen, and oxygen.

What is the process called when water is removed to form a bond between monomers?

• Condensation reaction

• Oxidation

• Dehydration synthesis

• Hydrolysis

Which carbohydrate is used by plants to build tough cell walls?

• Starch

• Cellulose

• Sucrose

• Glycogen

Why do marathon runners consume large amounts of carbohydrates before a race?

• To improve hydration.

• To build muscle mass.

• To store glycogen for quick energy release.

• To increase their protein levels.