ETS MAJOR FIELD TEST EXAM 300 ACTUAL
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALE LATEST UPDATE ALREADY GRADED A+
The ETS Major Field Test (MFT) is a comprehensive, standardized
undergraduate and MBA exit exam assessing program effectiveness and
student mastery of core disciplinary knowledge. It evaluates critical thinking
and the application of fundamental concepts across major-specific content
areas like biology, business, chemistry, and psychology. The exam features
multiple-choice questions, often requiring interpretation of data, diagrams,
and scenarios. It provides national comparative data, allowing institutions to
benchmark student performance against peers. Students typically take the
MFT near graduation, often as a capstone requirement, with results used for
program evaluation and curriculum improvement.
1. A biology student is studying a cell that has a distinct nucleus and membrane-
bound organelles. This cell is best classified as which type?
A) Prokaryotic
B) Eukaryotic
C) Archaeal
D) Viral
Correct Answer: B
Rationale: Eukaryotic cells are characterized by the presence of a true nucleus and
membrane-bound organelles, distinguishing them from prokaryotic cells that lack
these structures .
2. The first and second laws of thermodynamics are fundamental to understanding
cell energetics. Which statement correctly describes the first law?
A) Energy can be created and destroyed in a closed system.
B) Energy cannot be created or destroyed, only transformed.
C) Energy transfer increases the entropy of the universe.
D) All energy transformations are perfectly efficient.
Correct Answer: B
,Rationale: The first law of thermodynamics states that energy cannot be created or
destroyed but can be changed from one form to another, which is a core concept in
cellular bioenergetics .
3. A researcher is analyzing an enzyme's function. Which of the following factors
most directly affects the rate of an enzyme-catalyzed reaction?
A) The color of the solution
B) The pH of the environment
C) The molecular weight of the substrate
D) The volume of the beaker
Correct Answer: B
Rationale: Enzyme activity is highly sensitive to environmental conditions,
particularly pH and temperature, which can alter the enzyme's three-dimensional
structure and its catalytic efficiency .
4. In the context of cell biology, what is the primary role of ATP?
A) Store genetic information
B) Form the structural basis of cell membranes
C) Serve as the main energy currency of the cell
D) Catalyze chemical reactions
Correct Answer: C
Rationale: ATP (adenosine triphosphate) is the primary molecule for storing and
transferring energy within cells, powering various metabolic processes and cellular
work .
5. The cytoskeleton is an important cellular component. Which of the following is
a function of the cytoskeleton?
A) Synthesizing proteins
B) Storing genetic material
C) Facilitating cell motility and maintaining cell shape
D) Producing ATP
Correct Answer: C
Rationale: The cytoskeleton is a network of protein filaments that provides
structural support, facilitates cell movement, and is involved in intracellular
transport .
6. A cell is undergoing the process of mitosis. What is the final outcome of this
process?
A) The formation of four genetically unique daughter cells
B) The formation of two genetically identical daughter cells
,C) The division of the cytoplasm only
D) The production of gametes
Correct Answer: B
Rationale: Mitosis results in the production of two genetically identical daughter
cells, each with the same number of chromosomes as the parent cell, which is
crucial for growth and repair .
7. A biology student is analyzing a DNA sequence. Which of the following is a
correct pairing of nitrogenous bases in DNA?
A) Adenine with Guanine
B) Thymine with Cytosine
C) Guanine with Cytosine
D) Adenine with Uracil
Correct Answer: C
Rationale: In DNA, guanine (G) always pairs with cytosine (C) through three
hydrogen bonds, while adenine (A) pairs with thymine (T). This specific base
pairing is essential for DNA replication and transcription .
8. Which of the following correctly describes the process of DNA replication?
A) It is a conservative process where the original DNA is completely preserved.
B) It is a semi-conservative process where each new DNA molecule contains one
old and one new strand.
C) It is a dispersive process where the new DNA is a mixture of old and new
segments.
D) It is a process that occurs only in the cytoplasm.
Correct Answer: B
Rationale: DNA replication is semi-conservative, meaning each of the two
resulting DNA molecules consists of one original (parental) strand and one newly
synthesized strand .
9. A mutation occurs in a DNA sequence. If this mutation leads to a change in the
amino acid sequence of a protein, what type of mutation is it?
A) Silent mutation
B) Missense mutation
C) Nonsense mutation
D) Frameshift mutation
Correct Answer: B
Rationale: A missense mutation is a point mutation where a change in a single
nucleotide results in a codon that codes for a different amino acid, which can alter
the protein's structure and function .
, 10. A research team is studying gene expression. In eukaryotic cells, which process
involves the removal of introns and joining of exons in a pre-mRNA molecule?
A) Replication
B) Translation
C) Transcription
D) RNA splicing
Correct Answer: D
Rationale: In eukaryotes, RNA splicing is a crucial post-transcriptional
modification where non-coding introns are removed from the pre-mRNA molecule
and the coding exons are spliced together to form the mature mRNA .
11. During translation, which molecule is responsible for carrying amino acids to
the ribosome?
A) mRNA
B) tRNA
C) rRNA
D) DNA
Correct Answer: B
Rationale: Transfer RNA (tRNA) molecules are responsible for bringing specific
amino acids to the ribosome during translation, matching the codon on the mRNA
to the correct amino acid .
12. A geneticist is creating a pedigree for a family trait. If the trait appears in every
generation and both males and females are equally affected, what is the most likely
mode of inheritance?
A) X-linked recessive
B) Autosomal dominant
C) X-linked dominant
D) Y-linked
Correct Answer: B
Rationale: An autosomal dominant inheritance pattern typically results in the trait
appearing in every generation (no skipping), with affected individuals having at
least one affected parent, and both sexes being equally affected .
13. A student is calculating allele frequencies using the Hardy-Weinberg principle.
Which of the following conditions must be met for a population to be in Hardy-
Weinberg equilibrium?
A) Random mating
B) High mutation rate
QUESTIONS AND CORRECT ANSWERS WITH
RATIONALE LATEST UPDATE ALREADY GRADED A+
The ETS Major Field Test (MFT) is a comprehensive, standardized
undergraduate and MBA exit exam assessing program effectiveness and
student mastery of core disciplinary knowledge. It evaluates critical thinking
and the application of fundamental concepts across major-specific content
areas like biology, business, chemistry, and psychology. The exam features
multiple-choice questions, often requiring interpretation of data, diagrams,
and scenarios. It provides national comparative data, allowing institutions to
benchmark student performance against peers. Students typically take the
MFT near graduation, often as a capstone requirement, with results used for
program evaluation and curriculum improvement.
1. A biology student is studying a cell that has a distinct nucleus and membrane-
bound organelles. This cell is best classified as which type?
A) Prokaryotic
B) Eukaryotic
C) Archaeal
D) Viral
Correct Answer: B
Rationale: Eukaryotic cells are characterized by the presence of a true nucleus and
membrane-bound organelles, distinguishing them from prokaryotic cells that lack
these structures .
2. The first and second laws of thermodynamics are fundamental to understanding
cell energetics. Which statement correctly describes the first law?
A) Energy can be created and destroyed in a closed system.
B) Energy cannot be created or destroyed, only transformed.
C) Energy transfer increases the entropy of the universe.
D) All energy transformations are perfectly efficient.
Correct Answer: B
,Rationale: The first law of thermodynamics states that energy cannot be created or
destroyed but can be changed from one form to another, which is a core concept in
cellular bioenergetics .
3. A researcher is analyzing an enzyme's function. Which of the following factors
most directly affects the rate of an enzyme-catalyzed reaction?
A) The color of the solution
B) The pH of the environment
C) The molecular weight of the substrate
D) The volume of the beaker
Correct Answer: B
Rationale: Enzyme activity is highly sensitive to environmental conditions,
particularly pH and temperature, which can alter the enzyme's three-dimensional
structure and its catalytic efficiency .
4. In the context of cell biology, what is the primary role of ATP?
A) Store genetic information
B) Form the structural basis of cell membranes
C) Serve as the main energy currency of the cell
D) Catalyze chemical reactions
Correct Answer: C
Rationale: ATP (adenosine triphosphate) is the primary molecule for storing and
transferring energy within cells, powering various metabolic processes and cellular
work .
5. The cytoskeleton is an important cellular component. Which of the following is
a function of the cytoskeleton?
A) Synthesizing proteins
B) Storing genetic material
C) Facilitating cell motility and maintaining cell shape
D) Producing ATP
Correct Answer: C
Rationale: The cytoskeleton is a network of protein filaments that provides
structural support, facilitates cell movement, and is involved in intracellular
transport .
6. A cell is undergoing the process of mitosis. What is the final outcome of this
process?
A) The formation of four genetically unique daughter cells
B) The formation of two genetically identical daughter cells
,C) The division of the cytoplasm only
D) The production of gametes
Correct Answer: B
Rationale: Mitosis results in the production of two genetically identical daughter
cells, each with the same number of chromosomes as the parent cell, which is
crucial for growth and repair .
7. A biology student is analyzing a DNA sequence. Which of the following is a
correct pairing of nitrogenous bases in DNA?
A) Adenine with Guanine
B) Thymine with Cytosine
C) Guanine with Cytosine
D) Adenine with Uracil
Correct Answer: C
Rationale: In DNA, guanine (G) always pairs with cytosine (C) through three
hydrogen bonds, while adenine (A) pairs with thymine (T). This specific base
pairing is essential for DNA replication and transcription .
8. Which of the following correctly describes the process of DNA replication?
A) It is a conservative process where the original DNA is completely preserved.
B) It is a semi-conservative process where each new DNA molecule contains one
old and one new strand.
C) It is a dispersive process where the new DNA is a mixture of old and new
segments.
D) It is a process that occurs only in the cytoplasm.
Correct Answer: B
Rationale: DNA replication is semi-conservative, meaning each of the two
resulting DNA molecules consists of one original (parental) strand and one newly
synthesized strand .
9. A mutation occurs in a DNA sequence. If this mutation leads to a change in the
amino acid sequence of a protein, what type of mutation is it?
A) Silent mutation
B) Missense mutation
C) Nonsense mutation
D) Frameshift mutation
Correct Answer: B
Rationale: A missense mutation is a point mutation where a change in a single
nucleotide results in a codon that codes for a different amino acid, which can alter
the protein's structure and function .
, 10. A research team is studying gene expression. In eukaryotic cells, which process
involves the removal of introns and joining of exons in a pre-mRNA molecule?
A) Replication
B) Translation
C) Transcription
D) RNA splicing
Correct Answer: D
Rationale: In eukaryotes, RNA splicing is a crucial post-transcriptional
modification where non-coding introns are removed from the pre-mRNA molecule
and the coding exons are spliced together to form the mature mRNA .
11. During translation, which molecule is responsible for carrying amino acids to
the ribosome?
A) mRNA
B) tRNA
C) rRNA
D) DNA
Correct Answer: B
Rationale: Transfer RNA (tRNA) molecules are responsible for bringing specific
amino acids to the ribosome during translation, matching the codon on the mRNA
to the correct amino acid .
12. A geneticist is creating a pedigree for a family trait. If the trait appears in every
generation and both males and females are equally affected, what is the most likely
mode of inheritance?
A) X-linked recessive
B) Autosomal dominant
C) X-linked dominant
D) Y-linked
Correct Answer: B
Rationale: An autosomal dominant inheritance pattern typically results in the trait
appearing in every generation (no skipping), with affected individuals having at
least one affected parent, and both sexes being equally affected .
13. A student is calculating allele frequencies using the Hardy-Weinberg principle.
Which of the following conditions must be met for a population to be in Hardy-
Weinberg equilibrium?
A) Random mating
B) High mutation rate
