,CHEM 104 Module 6 Exam | Q&A | 2026/2027 | General Chemistry II |
Portage Learning
1. The four main classes of biochemicals are:
A) Proteins, carbohydrates, lipids, and nucleic acids
B) Proteins, fats, sugars, and DNA
C) Amino acids, fatty acids, monosaccharides, and nucleotides
D) Enzymes, hormones, vitamins, and minerals
Correct Answer: Proteins, carbohydrates, lipids, and nucleic acids
Rationale: The four main classes of biochemicals are proteins, carbohydrates,
lipids, and nucleic acids. These represent the fundamental biomolecules that
make up all living organisms.
2. The three classes of carbohydrates are:
A) Monosaccharides, disaccharides, and polysaccharides
B) Glucose, fructose, and galactose
C) Starch, glycogen, and cellulose
D) Simple, complex, and refined
Correct Answer: Monosaccharides, disaccharides, and polysaccharides
Rationale: The three classes of carbohydrates are monosaccharides (simple
sugars), disaccharides (two monosaccharides linked), and polysaccharides
(many monosaccharides linked).
3. Which of the following are also called sugars and are used as fuels by
living systems?
A) Proteins
,B) Lipids
C) Carbohydrates
D) Nucleic acids
Correct Answer: Carbohydrates
Rationale: Carbohydrates, which are also called sugars, are used as fuels by
living systems. They are the primary source of energy for most organisms.
4. The simplest sugars are called:
A) Monosaccharides
B) Disaccharides
C) Polysaccharides
D) Oligosaccharides
Correct Answer: Monosaccharides
Rationale: Monosaccharides are the simplest sugars. They cannot be
hydrolyzed into simpler carbohydrates and are the building blocks of more
complex carbohydrates.
5. The sugar which we call table sugar is called:
A) Glucose
B) Fructose
C) Sucrose
D) Maltose
Correct Answer: Sucrose
, Rationale: Sucrose is the chemical name for table sugar. It is a disaccharide
composed of glucose and fructose.
6. The carbohydrate found in bread which serves as a source of glucose is
called:
A) Cellulose
B) Starch
C) Glycogen
D) Sucrose
Correct Answer: Starch
Rationale: Starch is a polysaccharide found in bread and other plant-based
foods. It serves as a source of glucose when broken down during digestion.
7. Which of the following is a monosaccharide?
A) Sucrose
B) Maltose
C) Glucose
D) Starch
Correct Answer: Glucose
Rationale: Glucose is a monosaccharide (simple sugar). Sucrose and maltose
are disaccharides, and starch is a polysaccharide.
8. Which of the following is a disaccharide?
Portage Learning
1. The four main classes of biochemicals are:
A) Proteins, carbohydrates, lipids, and nucleic acids
B) Proteins, fats, sugars, and DNA
C) Amino acids, fatty acids, monosaccharides, and nucleotides
D) Enzymes, hormones, vitamins, and minerals
Correct Answer: Proteins, carbohydrates, lipids, and nucleic acids
Rationale: The four main classes of biochemicals are proteins, carbohydrates,
lipids, and nucleic acids. These represent the fundamental biomolecules that
make up all living organisms.
2. The three classes of carbohydrates are:
A) Monosaccharides, disaccharides, and polysaccharides
B) Glucose, fructose, and galactose
C) Starch, glycogen, and cellulose
D) Simple, complex, and refined
Correct Answer: Monosaccharides, disaccharides, and polysaccharides
Rationale: The three classes of carbohydrates are monosaccharides (simple
sugars), disaccharides (two monosaccharides linked), and polysaccharides
(many monosaccharides linked).
3. Which of the following are also called sugars and are used as fuels by
living systems?
A) Proteins
,B) Lipids
C) Carbohydrates
D) Nucleic acids
Correct Answer: Carbohydrates
Rationale: Carbohydrates, which are also called sugars, are used as fuels by
living systems. They are the primary source of energy for most organisms.
4. The simplest sugars are called:
A) Monosaccharides
B) Disaccharides
C) Polysaccharides
D) Oligosaccharides
Correct Answer: Monosaccharides
Rationale: Monosaccharides are the simplest sugars. They cannot be
hydrolyzed into simpler carbohydrates and are the building blocks of more
complex carbohydrates.
5. The sugar which we call table sugar is called:
A) Glucose
B) Fructose
C) Sucrose
D) Maltose
Correct Answer: Sucrose
, Rationale: Sucrose is the chemical name for table sugar. It is a disaccharide
composed of glucose and fructose.
6. The carbohydrate found in bread which serves as a source of glucose is
called:
A) Cellulose
B) Starch
C) Glycogen
D) Sucrose
Correct Answer: Starch
Rationale: Starch is a polysaccharide found in bread and other plant-based
foods. It serves as a source of glucose when broken down during digestion.
7. Which of the following is a monosaccharide?
A) Sucrose
B) Maltose
C) Glucose
D) Starch
Correct Answer: Glucose
Rationale: Glucose is a monosaccharide (simple sugar). Sucrose and maltose
are disaccharides, and starch is a polysaccharide.
8. Which of the following is a disaccharide?
