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

Which of the following is a common food additive?

  1. Salt

  2. Sugar

  3. Preservatives

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Salt, sugar, and preservatives are all common food additives that are used to enhance the flavor, texture, or shelf life of food.

Multiple choice

What is the primary carbohydrate found in milk and other dairy products?

  1. Lactose

  2. Glucose

  3. Fructose

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

Lactose is the major carbohydrate in milk and dairy products, and it is a disaccharide composed of glucose and galactose.

Multiple choice

Which enzyme is responsible for the softening of fruit during ripening?

  1. Pectinase

  2. Cellulase

  3. Amylase

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

Pectinase breaks down pectin, which leads to the softening of fruit during ripening.

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 primary sugar found in milk and is responsible for its sweet taste.

Multiple choice

What is the primary sugar found in honey?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Fructose is the primary sugar found in honey, accounting for about 38% of its composition.

Multiple choice

Which enzyme is responsible for the conversion of nectar into honey?

  1. Invertase

  2. Amylase

  3. Catalase

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

Glucose Oxidase, produced by bees, is the enzyme responsible for converting glucose in nectar into gluconic acid and hydrogen peroxide, contributing to honey's antibacterial properties.

Multiple choice

Which component of honey is responsible for its wound-healing properties?

  1. Methylglyoxal

  2. Glucose

  3. Fructose

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

Methylglyoxal (MGO), a compound found in honey, particularly in Manuka Honey, is known for its potent antibacterial and wound-healing properties.

Multiple choice

What is the main sugar found in apple juice?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Apple juice primarily contains fructose, a natural sugar that is sweeter than sucrose (table sugar).

Multiple choice

What is the primary sugar found in pineapple juice?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Pineapple juice primarily contains sucrose, the same sugar found in table sugar.

Multiple choice

What is the main sugar found in grape juice?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Grape juice primarily contains glucose, a simple sugar that is easily absorbed by the body.

Multiple choice

What is the primary component of wood?

  1. Cellulose

  2. Lignin

  3. Pectin

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

Cellulose is the main structural component of wood, making it strong and durable.

Multiple choice

What is the primary component of paper?

  1. Cellulose

  2. Lignin

  3. Pectin

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

Cellulose is the main component of paper, making it strong and flexible.

Multiple choice

Which type of carbohydrate is most effective for providing quick energy during cycling?

  1. Glucose

  2. Fructose

  3. Sucrose

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

Glucose is the most rapidly absorbed and utilized carbohydrate, providing quick energy during cycling.

Multiple choice

What is the term used to describe the presence of glucose in the urine?

  1. Hyperglycemia

  2. Hypoglycemia

  3. Glycosuria

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

Glycosuria refers to the presence of glucose in the urine, which is a sign of elevated blood sugar levels and can be an indication of Diabetes Mellitus.

Multiple choice

What is the primary sugar found in most fruit juices?

  1. Fructose

  2. Glucose

  3. Sucrose

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

Fructose is the dominant sugar in fruit juices, contributing to their sweet taste and high caloric content.