MIT Biology Exam 2025 | 153 Questions and Answers
Table of Contents
1. Introduction
2. Exam Overview
3. Key Topics Covered
4. Study Strategies & Tips
5. Practice Questions & Answers
6. About Us & Support
1. Introduction
Welcome to the official MIT Biology Exam 2025 Study Guide. This document is your comprehensive resource
for mastering the exam. Whether you’re brushing up on foundational biology or tackling complex molecular
questions, our goal is to help you succeed with clarity, strategy, and confidence.
2. Exam Overview
• Exam Title: MIT Biology Exam 2025
• Type: Multiple-choice & Analytical Questions
• Total Questions: 153
• Skills Tested: Knowledge of biological systems, scientific analysis, experimental reasoning, and
problem-solving.
3. Key Topics Covered
• Cell Structure & Function: Organelles, membranes, and transport processes.
• Genetics & Heredity: Mendelian genetics, gene expression, mutations.
• Molecular Biology: DNA/RNA structure, replication, transcription, translation.
• Evolution & Ecology: Natural selection, speciation, ecosystems.
• Human Anatomy & Physiology: Nervous, circulatory, digestive, and endocrine systems.
• Biotechnology: CRISPR, genetic engineering, bioethics.
• Scientific Inquiry & Lab Techniques: Microscopy, experimental design, data analysis
,4. Study Strategies & Tips
• Master the Basics: Build a strong foundation with key biological terms and processes.
• Use Visual Aids: Diagrams and concept maps improve retention.
• Practice Frequently: Regular quizzes and mock exams enhance confidence.
• Teach Concepts: Explaining topics aloud helps reinforce understanding.
• Stay Updated: Review recent discoveries and their real-world applications.
MIT Biology Exam 2025 | 153 Questions and Answers
1. What is the definition of an insertion mutation?
A mutation involving the addition of one or more nucleotide
pairs to a gene.
A mutation that changes a single nucleotide in a gene.
A mutation that results in the deletion of nucleotide pairs from a
gene.
A mutation that causes a gene to be duplicated.
2. Describe the significance of being heterozygous in the context of
genetic variation.
Being heterozygous ensures that an organism will express a
dominant trait.
Being heterozygous has no impact on genetic variation.
Being heterozygous eliminates the possibility of genetic disorders.
Being heterozygous contributes to genetic diversity and can
influence an organism's phenotype.
3. How does variation among species contribute to the process of natural
,selection?
Variation allows for different traits to be selected for or against
in a population.
Variation ensures that all individuals in a species are identical.
Variation is irrelevant to natural selection processes.
Variation leads to the extinction of all but the strongest
individuals.
, 4. Describe the role of somatic cells in the human body and how they differ
from reproductive cells.
Somatic cells are involved in the immune response, while
reproductive cells are not.
Somatic cells are responsible for genetic variation, while
reproductive cells are not.
Somatic cells are only found in the skin, while reproductive cells
are found in the ovaries and testes.
Somatic cells make up most of the body tissues and organs,
while reproductive cells are involved in reproduction.
5. Describe what is meant by a sex-linked trait and how it is inherited.
A sex-linked trait is a characteristic that affects only physical traits.
A sex-linked trait is a characteristic that can be inherited from
either parent equally.
A sex-linked trait is a characteristic that is only expressed in males.
A sex-linked trait is a characteristic controlled by genes on the X
chromosome, and it is inherited through the X chromosome
from parents to offspring.
6. If a karyotype analysis reveals an extra chromosome in pair 21, what
condition might this indicate?
Klinefelter syndrome
Turner syndrome
Down syndrome
Cystic fibrosis
7. What is the name for unspecialized cells that can develop into
specialized cells under the right condition?
Table of Contents
1. Introduction
2. Exam Overview
3. Key Topics Covered
4. Study Strategies & Tips
5. Practice Questions & Answers
6. About Us & Support
1. Introduction
Welcome to the official MIT Biology Exam 2025 Study Guide. This document is your comprehensive resource
for mastering the exam. Whether you’re brushing up on foundational biology or tackling complex molecular
questions, our goal is to help you succeed with clarity, strategy, and confidence.
2. Exam Overview
• Exam Title: MIT Biology Exam 2025
• Type: Multiple-choice & Analytical Questions
• Total Questions: 153
• Skills Tested: Knowledge of biological systems, scientific analysis, experimental reasoning, and
problem-solving.
3. Key Topics Covered
• Cell Structure & Function: Organelles, membranes, and transport processes.
• Genetics & Heredity: Mendelian genetics, gene expression, mutations.
• Molecular Biology: DNA/RNA structure, replication, transcription, translation.
• Evolution & Ecology: Natural selection, speciation, ecosystems.
• Human Anatomy & Physiology: Nervous, circulatory, digestive, and endocrine systems.
• Biotechnology: CRISPR, genetic engineering, bioethics.
• Scientific Inquiry & Lab Techniques: Microscopy, experimental design, data analysis
,4. Study Strategies & Tips
• Master the Basics: Build a strong foundation with key biological terms and processes.
• Use Visual Aids: Diagrams and concept maps improve retention.
• Practice Frequently: Regular quizzes and mock exams enhance confidence.
• Teach Concepts: Explaining topics aloud helps reinforce understanding.
• Stay Updated: Review recent discoveries and their real-world applications.
MIT Biology Exam 2025 | 153 Questions and Answers
1. What is the definition of an insertion mutation?
A mutation involving the addition of one or more nucleotide
pairs to a gene.
A mutation that changes a single nucleotide in a gene.
A mutation that results in the deletion of nucleotide pairs from a
gene.
A mutation that causes a gene to be duplicated.
2. Describe the significance of being heterozygous in the context of
genetic variation.
Being heterozygous ensures that an organism will express a
dominant trait.
Being heterozygous has no impact on genetic variation.
Being heterozygous eliminates the possibility of genetic disorders.
Being heterozygous contributes to genetic diversity and can
influence an organism's phenotype.
3. How does variation among species contribute to the process of natural
,selection?
Variation allows for different traits to be selected for or against
in a population.
Variation ensures that all individuals in a species are identical.
Variation is irrelevant to natural selection processes.
Variation leads to the extinction of all but the strongest
individuals.
, 4. Describe the role of somatic cells in the human body and how they differ
from reproductive cells.
Somatic cells are involved in the immune response, while
reproductive cells are not.
Somatic cells are responsible for genetic variation, while
reproductive cells are not.
Somatic cells are only found in the skin, while reproductive cells
are found in the ovaries and testes.
Somatic cells make up most of the body tissues and organs,
while reproductive cells are involved in reproduction.
5. Describe what is meant by a sex-linked trait and how it is inherited.
A sex-linked trait is a characteristic that affects only physical traits.
A sex-linked trait is a characteristic that can be inherited from
either parent equally.
A sex-linked trait is a characteristic that is only expressed in males.
A sex-linked trait is a characteristic controlled by genes on the X
chromosome, and it is inherited through the X chromosome
from parents to offspring.
6. If a karyotype analysis reveals an extra chromosome in pair 21, what
condition might this indicate?
Klinefelter syndrome
Turner syndrome
Down syndrome
Cystic fibrosis
7. What is the name for unspecialized cells that can develop into
specialized cells under the right condition?
