ATI TEAS 7 BIOLOGY REVIEW: 100+
PRACTICE QUESTIONS
Section 1: Macromolecules (Carbohydrates, Lipids,
Proteins, Nucleic Acids)
1. Which of the following macromolecules is the primary
source of quick energy for the body?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic Acids
Answer: C. Carbohydrates
Rationale: Carbohydrates are broken down into glucose,
which is readily used by cells for energy production through
cellular respiration.
2. Which macromolecule is responsible for storing genetic
information?
A. Carbohydrates
,B. Lipids
C. Proteins
D. Nucleic Acids
Answer: D. Nucleic Acids
Rationale: Nucleic acids (DNA and RNA) are responsible for
storing and transmitting genetic information.
3. Enzymes are a type of which macromolecule?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
Answer: C. Proteins
Rationale: Enzymes are biological catalysts made of proteins
that speed up chemical reactions.
4. Which of the following is a monosaccharide?
A. Sucrose
B. Lactose
C. Glucose
D. Starch
Answer: C. Glucose
Rationale: Glucose is a simple sugar (monosaccharide).
Sucrose and lactose are disaccharides, and starch is a
polysaccharide.
,5. What is the primary function of lipids in the cell
membrane?
A. Energy storage
B. Insulation
C. Forming a barrier
D. Cell signaling
Answer: C. Forming a barrier
Rationale: The phospholipid bilayer forms the fundamental
structure of the cell membrane, creating a selective barrier.
6. The monomer of a protein is:
A. Nucleotide
B. Monosaccharide
C. Amino acid
D. Fatty acid
Answer: C. Amino acid
Rationale: Proteins are polymers made up of monomer units
called amino acids linked by peptide bonds.
7. Saturated fats are typically ________ at room
temperature.
A. Liquid
B. Solid
C. Gas
D. Amorphous
Answer: B. Solid
, Rationale: Saturated fats have straight hydrocarbon chains
that pack tightly together, making them solid at room
temperature (e.g., butter).
8. The nucleotide contains all of the following except:
A. Phosphate group
B. Fatty acid chain
C. Sugar molecule
D. Nitrogenous base
Answer: B. Fatty acid chain
Rationale: Nucleotides are made of a phosphate group, a
sugar, and a nitrogenous base. Fatty acid chains are
components of lipids.
9. Which of the following is a function of proteins in the
body?
A. Long-term energy storage
B. Insulation
C. Catalyzing reactions
D. Storing genetic information
Answer: C. Catalyzing reactions
Rationale: Proteins function as enzymes to catalyze
biochemical reactions. They also serve in structure, transport,
and immunity.
PRACTICE QUESTIONS
Section 1: Macromolecules (Carbohydrates, Lipids,
Proteins, Nucleic Acids)
1. Which of the following macromolecules is the primary
source of quick energy for the body?
A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic Acids
Answer: C. Carbohydrates
Rationale: Carbohydrates are broken down into glucose,
which is readily used by cells for energy production through
cellular respiration.
2. Which macromolecule is responsible for storing genetic
information?
A. Carbohydrates
,B. Lipids
C. Proteins
D. Nucleic Acids
Answer: D. Nucleic Acids
Rationale: Nucleic acids (DNA and RNA) are responsible for
storing and transmitting genetic information.
3. Enzymes are a type of which macromolecule?
A. Carbohydrates
B. Lipids
C. Proteins
D. Nucleic Acids
Answer: C. Proteins
Rationale: Enzymes are biological catalysts made of proteins
that speed up chemical reactions.
4. Which of the following is a monosaccharide?
A. Sucrose
B. Lactose
C. Glucose
D. Starch
Answer: C. Glucose
Rationale: Glucose is a simple sugar (monosaccharide).
Sucrose and lactose are disaccharides, and starch is a
polysaccharide.
,5. What is the primary function of lipids in the cell
membrane?
A. Energy storage
B. Insulation
C. Forming a barrier
D. Cell signaling
Answer: C. Forming a barrier
Rationale: The phospholipid bilayer forms the fundamental
structure of the cell membrane, creating a selective barrier.
6. The monomer of a protein is:
A. Nucleotide
B. Monosaccharide
C. Amino acid
D. Fatty acid
Answer: C. Amino acid
Rationale: Proteins are polymers made up of monomer units
called amino acids linked by peptide bonds.
7. Saturated fats are typically ________ at room
temperature.
A. Liquid
B. Solid
C. Gas
D. Amorphous
Answer: B. Solid
, Rationale: Saturated fats have straight hydrocarbon chains
that pack tightly together, making them solid at room
temperature (e.g., butter).
8. The nucleotide contains all of the following except:
A. Phosphate group
B. Fatty acid chain
C. Sugar molecule
D. Nitrogenous base
Answer: B. Fatty acid chain
Rationale: Nucleotides are made of a phosphate group, a
sugar, and a nitrogenous base. Fatty acid chains are
components of lipids.
9. Which of the following is a function of proteins in the
body?
A. Long-term energy storage
B. Insulation
C. Catalyzing reactions
D. Storing genetic information
Answer: C. Catalyzing reactions
Rationale: Proteins function as enzymes to catalyze
biochemical reactions. They also serve in structure, transport,
and immunity.
