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 carbohydrate component of legumes and pulses?

  1. Starch

  2. Cellulose

  3. Hemicellulose

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

Starch is the primary carbohydrate component of legumes and pulses.

Multiple choice

What is the scientific term for the process of breaking down starch into simpler sugars?

  1. Hydrolysis

  2. Polymerization

  3. Dehydration

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

Hydrolysis is the chemical process of breaking down starch into simpler sugars, such as glucose, with the help of water molecules.

Multiple choice

What is the primary ingredient used in making gummy candies?

  1. Gelatin

  2. Corn Syrup

  3. Sugar

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

Pectin, a natural polysaccharide derived from fruits, is commonly used as a gelling agent in gummy candies. It provides the chewy and elastic texture characteristic of these candies.

Multiple choice

What is the role of pectin in jam and jelly making?

  1. Sweetener

  2. Thickening agent

  3. Preservative

  4. Coloring agent
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pectin, a natural substance found in fruits, acts as a thickening agent, helping jams and jellies to achieve their characteristic consistency.

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 main sugar found in milk and dairy products, a disaccharide composed of glucose and galactose.

Multiple choice

What is the primary sugar found in milk and yogurt?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Lactose is the primary sugar found in milk and yogurt. It is a disaccharide composed of glucose and galactose.

Multiple choice

Which of the following is a common artificial sweetener?

  1. Aspartame

  2. Sucralose

  3. Stevia

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

Aspartame is an artificial sweetener that is approximately 200 times sweeter than sucrose.

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 natural sugar present in milk and is responsible for its slightly sweet taste.

Multiple choice

Which of the following is not a common adulterant used in apple juice?

  1. High-fructose corn syrup

  2. Water

  3. Artificial sweeteners

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

Grape juice is not a common adulterant used in apple juice, as it would be difficult to disguise the difference in taste and color.

Multiple choice

Which of the following is NOT a type of carbohydrate?

  1. Starch

  2. Fiber

  3. Glucose

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

Protein is not a type of carbohydrate. Carbohydrates are composed of sugar molecules, while proteins are composed of amino acids.

Multiple choice

Which type of sugar is commonly used in jam and jelly making?

  1. White sugar

  2. Brown sugar

  3. Honey

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

White sugar is the most commonly used sweetener in jam and jelly making due to its high sucrose content and neutral flavor.

Multiple choice

What is the chemical formula of sugar?

  1. C6H12O6

  2. C12H22O11

  3. C18H32O16

  4. C24H44O22
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sugar, commonly known as sucrose, has the chemical formula C12H22O11.

Multiple choice

What is the main component of refined sugar?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Refined sugar primarily consists of sucrose, a disaccharide composed of glucose and fructose.

Multiple choice

Which type of sugar is commonly used in baking?

  1. Brown sugar

  2. Powdered sugar

  3. Granulated sugar

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

Granulated sugar, also known as white sugar, is the most common type of sugar used in baking due to its fine texture and consistent results.

Multiple choice

What is the role of sugar in caramelization?

  1. It promotes browning

  2. It adds sweetness

  3. It prevents crystallization

  4. It enhances texture
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sugar plays a crucial role in caramelization, a process that involves heating sugar to a high temperature, resulting in a brown color and a distinctive flavor.