DHN 101 Exam 2 — Original Practice
Questions with answers (1–100)
Section 1: Carbohydrates — Types and
Structure (1–25)
1. Which of the following is a monosaccharide?
A) Sucrose
B) Maltose
C) Fructose
D) Lactose
Answer: C — Fructose is a single sugar unit. Sucrose, maltose, and lactose are disaccharides .
2. What is the storage form of carbohydrates in plants?
A) Glycogen
B) Starch
C) Glucose
D) Cellulose
Answer: B — Starch is the plant storage form of carbohydrate .
3. The storage form of carbohydrates in animals is called:
A) Starch
B) Glycogen
C) Cellulose
D) Sucrose
Answer: B — Glycogen is the animal storage form, stored primarily in the liver and muscles .
4. Which of the following is a disaccharide?
A) Glucose
B) Fructose
C) Maltose
D) Galactose
Answer: C — Maltose is a disaccharide (glucose + glucose) .
5. Table sugar (sucrose) is composed of which two monosaccharides?
A) Glucose + glucose
B) Glucose + fructose
C) Glucose + galactose
,D) Fructose + galactose
Answer: B — Sucrose is glucose + fructose .
6. Lactose is composed of which two monosaccharides?
A) Glucose + glucose
B) Glucose + fructose
C) Glucose + galactose
D) Fructose + galactose
Answer: C — Lactose is glucose + galactose .
7. Another name for blood sugar is:
A) Fructose
B) Galactose
C) Glucose
D) Sucrose
Answer: C — Glucose is also known as blood sugar or dextrose .
8. Which of the following is a complex carbohydrate?
A) Fructose
B) Sucrose
C) Glycogen
D) Lactose
Answer: C — Glycogen is a polysaccharide (complex carbohydrate) .
9. Which of the following substances is a polysaccharide?
A) Glucose
B) Glycogen
C) Galactose
D) Sucrose
Answer: B — Glycogen is a polysaccharide composed of many glucose units .
10. A disaccharide consists of:
A) One sugar unit
B) Two sugar units
C) Three sugar units
D) Many sugar units
Answer: B — Disaccharides are composed of two monosaccharides .
11. Which carbohydrate is NOT a monosaccharide?
A) Glucose
B) Fructose
C) Galactose
D) Maltose
Answer: D — Maltose is a disaccharide .
, 12. The primary role of glucose in the body is to:
A) Build muscle tissue
B) Provide energy for cellular metabolism
C) Regulate body temperature
D) Transport oxygen
Answer: B — Glucose is the primary fuel for muscles and other cells .
13. Which of the following is a simple carbohydrate?
A) Starch
B) Fiber
C) Sucrose
D) Glycogen
Answer: C — Sucrose is a simple carbohydrate (disaccharide) .
14. Nutritive sweeteners:
A) Supply no energy per serving
B) Add energy to foods and beverages
C) Are all artificial
D) Are all sugar alcohols
Answer: B — Nutritive sweeteners add energy (calories) to foods .
15. Which of the following is a nonnutritive sweetener?
A) Sucrose
B) Fructose
C) Aspartame
D) Corn syrup
Answer: C — Aspartame supplies no energy per serving .
16. Examples of nonnutritive sweeteners include all EXCEPT:
A) Saccharin
B) Sucralose
C) Stevia
D) Sorbitol
Answer: D — Sorbitol is a nutritive sweetener (sugar alcohol) that provides calories .
17. Which of the following is a rich source of added sugars in a typical diet?
A) Fresh fruit
B) Sugar-sweetened beverages
C) Whole grains
D) Vegetables
Answer: B — Sugar-sweetened beverages are a primary source of added sugars .
18. Which food has a high glycemic index?
A) Cornflakes cereal
Questions with answers (1–100)
Section 1: Carbohydrates — Types and
Structure (1–25)
1. Which of the following is a monosaccharide?
A) Sucrose
B) Maltose
C) Fructose
D) Lactose
Answer: C — Fructose is a single sugar unit. Sucrose, maltose, and lactose are disaccharides .
2. What is the storage form of carbohydrates in plants?
A) Glycogen
B) Starch
C) Glucose
D) Cellulose
Answer: B — Starch is the plant storage form of carbohydrate .
3. The storage form of carbohydrates in animals is called:
A) Starch
B) Glycogen
C) Cellulose
D) Sucrose
Answer: B — Glycogen is the animal storage form, stored primarily in the liver and muscles .
4. Which of the following is a disaccharide?
A) Glucose
B) Fructose
C) Maltose
D) Galactose
Answer: C — Maltose is a disaccharide (glucose + glucose) .
5. Table sugar (sucrose) is composed of which two monosaccharides?
A) Glucose + glucose
B) Glucose + fructose
C) Glucose + galactose
,D) Fructose + galactose
Answer: B — Sucrose is glucose + fructose .
6. Lactose is composed of which two monosaccharides?
A) Glucose + glucose
B) Glucose + fructose
C) Glucose + galactose
D) Fructose + galactose
Answer: C — Lactose is glucose + galactose .
7. Another name for blood sugar is:
A) Fructose
B) Galactose
C) Glucose
D) Sucrose
Answer: C — Glucose is also known as blood sugar or dextrose .
8. Which of the following is a complex carbohydrate?
A) Fructose
B) Sucrose
C) Glycogen
D) Lactose
Answer: C — Glycogen is a polysaccharide (complex carbohydrate) .
9. Which of the following substances is a polysaccharide?
A) Glucose
B) Glycogen
C) Galactose
D) Sucrose
Answer: B — Glycogen is a polysaccharide composed of many glucose units .
10. A disaccharide consists of:
A) One sugar unit
B) Two sugar units
C) Three sugar units
D) Many sugar units
Answer: B — Disaccharides are composed of two monosaccharides .
11. Which carbohydrate is NOT a monosaccharide?
A) Glucose
B) Fructose
C) Galactose
D) Maltose
Answer: D — Maltose is a disaccharide .
, 12. The primary role of glucose in the body is to:
A) Build muscle tissue
B) Provide energy for cellular metabolism
C) Regulate body temperature
D) Transport oxygen
Answer: B — Glucose is the primary fuel for muscles and other cells .
13. Which of the following is a simple carbohydrate?
A) Starch
B) Fiber
C) Sucrose
D) Glycogen
Answer: C — Sucrose is a simple carbohydrate (disaccharide) .
14. Nutritive sweeteners:
A) Supply no energy per serving
B) Add energy to foods and beverages
C) Are all artificial
D) Are all sugar alcohols
Answer: B — Nutritive sweeteners add energy (calories) to foods .
15. Which of the following is a nonnutritive sweetener?
A) Sucrose
B) Fructose
C) Aspartame
D) Corn syrup
Answer: C — Aspartame supplies no energy per serving .
16. Examples of nonnutritive sweeteners include all EXCEPT:
A) Saccharin
B) Sucralose
C) Stevia
D) Sorbitol
Answer: D — Sorbitol is a nutritive sweetener (sugar alcohol) that provides calories .
17. Which of the following is a rich source of added sugars in a typical diet?
A) Fresh fruit
B) Sugar-sweetened beverages
C) Whole grains
D) Vegetables
Answer: B — Sugar-sweetened beverages are a primary source of added sugars .
18. Which food has a high glycemic index?
A) Cornflakes cereal
