Biology ยท Chemistry

Carbohydrates and Biomolecules

986 Questions

Carbohydrates and biomolecules questions test your understanding of sugars, monosaccharides, and metabolic substrates. The topic covers food transportation in plants and the biochemical properties of sweeteners. Practicing these questions builds a strong foundation for exam preparation.

Disaccharides and monosaccharidesArtificial sweetenersGlycogen storagePlant food transportGlycoprotein hormones

Carbohydrates and Biomolecules Questions

Multiple choice

What is the primary sugar found in honey?

  1. Sucrose

  2. Glucose

  3. Fructose

  4. Maltose
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Honey primarily consists of fructose, a natural sugar that is sweeter than sucrose and has a lower glycemic index.

Multiple choice

Which of the following is a natural food sweetener derived from a plant?

  1. Stevia

  2. Sucralose

  3. Aspartame

  4. Acesulfame potassium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Stevia is a natural food sweetener derived from the leaves of the stevia plant. It is a zero-calorie sweetener that is often used as a sugar substitute in food and beverages.

Multiple choice

What is the primary sugar found in milk?

  1. Glucose

  2. Fructose

  3. Sucrose

  4. Lactose
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lactose is the predominant sugar in milk, a disaccharide composed of glucose and galactose.

Multiple choice

Which of the following sweeteners is a natural and sustainable alternative to refined sugar?

  1. Jaggery

  2. Honey

  3. Maple Syrup

  4. High-Fructose Corn Syrup
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Jaggery is a natural sweetener made from sugarcane or palm sap. It is a healthier and more sustainable alternative to refined sugar, as it retains the natural minerals and nutrients present in the sap.

Multiple choice

Which of the following is NOT a type of carbohydrate?

  1. Monosaccharides

  2. Disaccharides

  3. Polysaccharides

  4. Proteins
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Proteins are not carbohydrates. They are made up of amino acids, not sugars.

Multiple choice

What is the simplest form of carbohydrate?

  1. Monosaccharides

  2. Disaccharides

  3. Polysaccharides

  4. Oligosaccharides
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Monosaccharides are the simplest form of carbohydrate. They cannot be broken down into smaller carbohydrates.

Multiple choice

Which of the following is a monosaccharide?

  1. Glucose

  2. Fructose

  3. Sucrose

  4. Starch
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Glucose is a monosaccharide. It is the most common sugar in the body and is the body's main source of energy.

Multiple choice

Which of the following is a disaccharide?

  1. Glucose

  2. Fructose

  3. Sucrose

  4. Starch
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sucrose is a disaccharide. It is made up of one molecule of glucose and one molecule of fructose.

Multiple choice

Which of the following is a polysaccharide?

  1. Glucose

  2. Fructose

  3. Sucrose

  4. Starch
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Starch is a polysaccharide. It is made up of many molecules of glucose.

Multiple choice

What is the process by which glucose is stored in the liver and muscles?

  1. Glycolysis

  2. Gluconeogenesis

  3. Glycogenolysis

  4. Glycogenesis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Glycogenesis is the process by which glucose is stored in the liver and muscles. It occurs when blood sugar levels are high.

Multiple choice

What is the role of glucose-6-phosphate isomerase in glycogenesis?

  1. converts glucose-6-phosphate to fructose-6-phosphate

  2. converts fructose-6-phosphate to glucose-6-phosphate

  3. converts fructose-1,6-bisphosphate to glucose-1,6-bisphosphate

  4. converts glucose-1-phosphate to glucose-6-phosphate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Glucose-6-phosphate isomerase catalyzes the isomerization of glucose-6-phosphate to fructose-6-phosphate.

Multiple choice

What is the role of aldolase in glycogenesis?

  1. converts fructose-1,6-bisphosphate to dihydroxyacetone phosphate and glyceraldehyde-3-phosphate

  2. converts dihydroxyacetone phosphate and glyceraldehyde-3-phosphate to fructose-1,6-bisphosphate

  3. converts glucose-6-phosphate to fructose-6-phosphate

  4. converts glucose-1-phosphate to glucose-6-phosphate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Aldolase catalyzes the cleavage of fructose-1,6-bisphosphate into dihydroxyacetone phosphate and glyceraldehyde-3-phosphate.

Multiple choice

Which of the following is NOT a carbohydrate?

  1. Glucose

  2. Fructose

  3. Starch

  4. Protein
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Proteins are not carbohydrates. They are made up of amino acids, while carbohydrates are made up of sugars.

Multiple choice

What is the chemical formula of glucose?

  1. C6H12O6

  2. C12H22O11

  3. C18H32O16

  4. C24H42O21
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The chemical formula of glucose is C6H12O6.

Multiple choice

Which of the following is a polysaccharide?

  1. Glucose

  2. Fructose

  3. Starch

  4. Sucrose
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Starch is a polysaccharide, which is a complex carbohydrate made up of many sugar units.