Biology ยท Chemistry

Carbohydrates and Biomolecules

1,073 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 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 sugar in jam making?

  1. Sweetening

  2. Thickening

  3. Preserving

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

Sugar is added to jams to provide sweetness and help preserve them.

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.

Multiple choice

Which of the following is a monosaccharide?

  1. Glucose

  2. Fructose

  3. Starch

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

Glucose is a monosaccharide, which is a simple sugar that cannot be broken down into smaller sugars.

Multiple choice

Which of the following is a disaccharide?

  1. Glucose

  2. Fructose

  3. Starch

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

Sucrose is a disaccharide, which is a sugar made up of two monosaccharides.

Multiple choice

What is the storage form of carbohydrates in animals?

  1. Glucose

  2. Fructose

  3. Starch

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

Glycogen is the storage form of carbohydrates in animals.

Multiple choice

Which of the following is a structural carbohydrate?

  1. Glucose

  2. Fructose

  3. Starch

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

Cellulose is a structural carbohydrate, which is used to build the cell walls of plants.

Multiple choice

What is the chemical formula of fructose?

  1. C6H12O6

  2. C12H22O11

  3. C18H32O16

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

The chemical formula of fructose is C6H12O6.

Multiple choice

Which of the following is a sugar alcohol?

  1. Glucose

  2. Fructose

  3. Sorbitol

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

Sorbitol is a sugar alcohol, which is a type of carbohydrate that has a similar structure to sugar but is not as sweet.

Multiple choice

Which of the following is a complex carbohydrate?

  1. Glucose

  2. Fructose

  3. Starch

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

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

Multiple choice

What is the end product of glycogenolysis?

  1. Glucose-1-phosphate

  2. Glucose-6-phosphate

  3. Glucose

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

The end product of glycogenolysis is glucose, which can be used for energy production or stored in the blood for later use.