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SECTION 1: BIOMOLECULES AND CHEMICAL FOUNDATIONS
(Questions 1-15)
1. Which of the following biomolecules is classified as a polysaccharide?
• A) Glucose
• B) Glycogen
• C) Fructose
• D) Lactose
Answer: B) Glycogen
Rationale: Glycogen is a polysaccharide, as it is a polymer of glucose monomers linked
by glycosidic bonds. Glucose and fructose are monosaccharides, while lactose is a
disaccharide composed of glucose and galactose .
2. What type of bond links amino acids in a polypeptide chain?
, • A) Glycosidic bond
• B) Peptide bond
• C) Ester bond
• D) Phosphodiester bond
Answer: B) Peptide bond
Rationale: A peptide bond is a covalent bond formed between the carboxyl group of
one amino acid and the amino group of another, linking them in a polypeptide chain.
Glycosidic bonds link sugars, ester bonds link fatty acids to glycerol, and phosphodiester
bonds link nucleotides .
3. Which of the following is NOT an element typically found in living organisms?
• A) Calcium (Ca)
• B) Hydrogen (H)
• C) Bromine (Br)
• D) Sulfur (S)
• E) Sodium (Na)
Answer: C) Bromine (Br)
Rationale: The most common elements in living organisms are C, H, O, N, P, S, Ca, K, Na,
Mg, and Cl. Bromine is not a common constituent of biomolecules and is considered a
trace element not typically found in significant amounts .
4. Which of the following contributes to water's unique properties?
, • A) Geometry of the molecule
• B) Polarity of the O-H bonds
• C) Ability to form hydrogen bonds
• D) Bond angle of water
• E) All of the above
Answer: E) All of the above
Rationale: Water's bent molecular geometry, polar O-H bonds, ability to form extensive
hydrogen bonds, and 104.5° bond angle all contribute to its unique properties .
5. Scientists refer to _____ as the "super glue" of the chemical world.
• A) Carbon
• B) Oxygen
• C) Nitrogen
• D) Hydrogen
Answer: A) Carbon
Rationale: Carbon is unique because it can form four stable covalent bonds, allowing it
to serve as the central building block for countless complex organic molecules. Carbon
skeletons form the backbone of all biomolecules .
6. What molecule is primarily produced via cellular respiration?
• A) DNA
• B) ATP
, • C) RNA
• D) Creatine
Answer: B) ATP
Rationale: Cellular respiration is the process by which cells break down glucose and
other organic molecules to produce adenosine triphosphate (ATP), the primary energy
currency of the cell .
7. Which of the following functional groups is NOT typically discussed in
biochemistry?
• A) Alcohol
• B) Amine
• C) Ketone
• D) Aldehyde
• E) All of these were discussed
Answer: E) All of these were discussed
Rationale: Alcohols, amines, ketones, and aldehydes are all important functional groups
discussed in biochemistry .
8. A compound with a molecular mass of 3,000 g/mol is considered a
macromolecule. (True or False)
• A) True
• B) False
Exam Prep Guide/ Newest IAAI CFI Exam
Prep Questions Bank – A comprehensive
review of 350 Latest Practice Questions
and Correct Answers/ IAAI CFI Exam Prep
Test Bank (Latest )
SECTION 1: BIOMOLECULES AND CHEMICAL FOUNDATIONS
(Questions 1-15)
1. Which of the following biomolecules is classified as a polysaccharide?
• A) Glucose
• B) Glycogen
• C) Fructose
• D) Lactose
Answer: B) Glycogen
Rationale: Glycogen is a polysaccharide, as it is a polymer of glucose monomers linked
by glycosidic bonds. Glucose and fructose are monosaccharides, while lactose is a
disaccharide composed of glucose and galactose .
2. What type of bond links amino acids in a polypeptide chain?
, • A) Glycosidic bond
• B) Peptide bond
• C) Ester bond
• D) Phosphodiester bond
Answer: B) Peptide bond
Rationale: A peptide bond is a covalent bond formed between the carboxyl group of
one amino acid and the amino group of another, linking them in a polypeptide chain.
Glycosidic bonds link sugars, ester bonds link fatty acids to glycerol, and phosphodiester
bonds link nucleotides .
3. Which of the following is NOT an element typically found in living organisms?
• A) Calcium (Ca)
• B) Hydrogen (H)
• C) Bromine (Br)
• D) Sulfur (S)
• E) Sodium (Na)
Answer: C) Bromine (Br)
Rationale: The most common elements in living organisms are C, H, O, N, P, S, Ca, K, Na,
Mg, and Cl. Bromine is not a common constituent of biomolecules and is considered a
trace element not typically found in significant amounts .
4. Which of the following contributes to water's unique properties?
, • A) Geometry of the molecule
• B) Polarity of the O-H bonds
• C) Ability to form hydrogen bonds
• D) Bond angle of water
• E) All of the above
Answer: E) All of the above
Rationale: Water's bent molecular geometry, polar O-H bonds, ability to form extensive
hydrogen bonds, and 104.5° bond angle all contribute to its unique properties .
5. Scientists refer to _____ as the "super glue" of the chemical world.
• A) Carbon
• B) Oxygen
• C) Nitrogen
• D) Hydrogen
Answer: A) Carbon
Rationale: Carbon is unique because it can form four stable covalent bonds, allowing it
to serve as the central building block for countless complex organic molecules. Carbon
skeletons form the backbone of all biomolecules .
6. What molecule is primarily produced via cellular respiration?
• A) DNA
• B) ATP
, • C) RNA
• D) Creatine
Answer: B) ATP
Rationale: Cellular respiration is the process by which cells break down glucose and
other organic molecules to produce adenosine triphosphate (ATP), the primary energy
currency of the cell .
7. Which of the following functional groups is NOT typically discussed in
biochemistry?
• A) Alcohol
• B) Amine
• C) Ketone
• D) Aldehyde
• E) All of these were discussed
Answer: E) All of these were discussed
Rationale: Alcohols, amines, ketones, and aldehydes are all important functional groups
discussed in biochemistry .
8. A compound with a molecular mass of 3,000 g/mol is considered a
macromolecule. (True or False)
• A) True
• B) False
