Exploring the Role of Carbohydrates in Biological Systems

This video from 2-minute classroom explains carbohydrates, a type of macromolecule composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio. It covers their roles in energy production, storage, and structural functions in organisms. The video details different types of carbohydrates: monosaccharides like glucose and fructose, disaccharides such as sucrose and lactose, and polysaccharides including starch, glycogen, and cellulose. It also touches on lactose intolerance and concludes with a prompt for further learning about macromolecules.

What elements make up carbohydrates?

• Carbon, hydrogen, nitrogen

• Carbon, hydrogen, oxygen

• Nitrogen, hydrogen, oxygen

• Carbon, sulfur, oxygen

What is the ratio of carbon, hydrogen, and oxygen in carbohydrates?

• 2:2:1

• 1:1:2

• 2:1:2

• 1:2:1

What is the simplest form of carbohydrates?

• Disaccharides

• Polysaccharides

• Oligosaccharides

• Monosaccharides

Which of the following is not a function of carbohydrates?

• Rapid energy production

• Structural component

• Energy storage

• DNA repair

Which sugar is primarily found in fruits?

• Fructose

• Glucose

• Galactose

• Sucrose

Which sugar is a key component of DNA?

• Sucrose

• Glucose

• Fructose

• Ribose

What is lactose intolerance caused by?

• High levels of fructose

• Low levels of glucose

• High levels of lactase

• Low levels of lactase

What forms when more than two monosaccharides are combined?

• Disaccharides

• Monosaccharides

• Polysaccharides

• Glycogen

Which polysaccharide is used for energy storage in animals?

• Chitin

• Starch

• Cellulose

• Glycogen

What determines the type of polysaccharide formed from glucose?

• The amount of glucose

• The way glucose is bound together

• The type of enzyme

• The type of organism