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A Guide to MCAT Topics and Sections

Each of the four MCAT exam sections has its own set of topics and subtopics. There’s a lot to cover for this exam and it can seem overwhelming at first. Stop for a moment. Take a deep breath; it’s really not as bad as it seems.

The best place to start MCAT preparation is knowing what topics will be covered in each of the sections. This will help you set up your MCAT study plan and create a strategy for success. You can choose which topics to focus on now and which to work on later with MCAT practice tests or a prep course to improve your MCAT score.

The MCAT Subjects

The MCAT tests your understanding of the below topics and subjects:

  • • Sociology
  • • Psychology
  • • General chemistry
  • • Organic chemistry
  • • Physics
  • • First semester biology
  • • Introductory biology

In addition to the science MCAT subjects, the MCAT will also be testing you on four scientific inquiry and reasoning skills:

Knowledge of Scientific Concepts and Principles
Scientific Reasoning and Problem Solving
Reasoning About the Design and Execution of Research
Data-Based and Statistical Reasoning

Luckily for you, the AAMC provides a subject breakdown for each of the MCAT sections of the exam as well as a list of topics that are covered. We have provided a brief overview of everything you need to know about the MCAT exam sections and topics:

Chemical and Physical Foundations of Biological Systems

The Chem/ Phys section will have 59 questions broken down as:

25% Basic Biochemistry
5% Introductory Biology
30% General Chemistry
15% Organic Chemistry
25% Introductory Physics

Below is a short list of some of the topics that can be covered in this section:

Carbohydrates Solubility
Doppler Effect Gravity
Fluids Friction
Electrostatics Drag
Ohm’s Law Waves
Lenses and Mirrors Translational Motion
Magnetism Thermodynamics
Acids/ Bases Periodic Trends

Critical Analysis and Reasoning Skills (CARS)

The MCAT CARS section is unique. Unlike the other sections of this exam, there is no previous knowledge required to be successful in this MCAT section. CARS focuses more on skill than knowledge; you will need to demonstrate your ability to understand and interpret what you’ve read. Due to the nature of the questions, you will need to focus on practice versus memorization to do well.

The skills measured in this MCAT section are important for success in medical school and the career that follows. Being a doctor is not all about the science and medical knowledge; doctors need to be able to interpret and understand many complex concepts to be successful.

The passages in this MCAT section will focus on either humanities or social service. You will face 9 passages with 5-7 questions following each for a total of 53 questions. Questions will test you on a variety of skills:

30% Comprehension
30% Reasoning Within the Text
40% Reasoning Beyond the Text

Biological and Biochemical Foundations of Living Systems

The Bio/ Biochem section will have 59 questions broken down as:

25% Basic Biochemistry
65% Introductory Biology
5% General Chemistry
5% Organic Chemistry

This MCAT section focuses on living systems as the name suggests; so, you’ll want to know about the body and how it functions. Below is a short list of some of the topics that can be covered in this section:

DNA Reproductive System
Genetics Nervous System
Circulatory System Endocrine System
Lymphatic System Evolution
Immune System Amino Acids and Proteins
Digestive System Lipids
Muscular and Skeletal Systems Meiosis and Mitosis

Psychological, Social, and Biological Foundations of Behavior

The Psych/ Soc section will have 59 questions broken down as:

65% Introductory Psychology
30% Introductory Sociology
5% Introductory Biology

The MCAT topics tested in this section may not necessarily help doctors in diagnosing a patient. Instead, they may help them understand their patients and their circumstances, which is often equally as important.

Below is a short list of some of the topics that can be covered in this section:

Cognitive Functions Conditioning
Emotion and Stress Central Nervous System
Memory Bias, Prejudice, and Discrimination
Sleep Psychological Development
Social Change and Inequality Psychological Disorders

Your MCAT Test Prep Plan

The courses you take in your undergraduate studies, will cover many of the MCAT test topics tested on the actual exam. The introductory courses you’re taking may not be enough to master the material, though, and you’ll want to have an in-depth understanding of these topics if you expect to do well on test day.

Let Blueprint MCAT (formerly Next Step) help you master the material. You can schedule a free consultation with one of our experienced MCAT Advisors to go over your MCAT prep course needs and determine if one-on-one MCAT tutoring or an online MCAT course. Each provides students with a customized study plan that will focus on each student’s individual test prep needs. Students will build a solid foundation of content as well as a successful study schedule and strategy for tackling the difficult exam. 

If you’re just starting out with your MCAT test prep, you’ll want to begin with a diagnostic practice exam. We have a free MCAT practice test bundle that gives students access to a half-length diagnostic exam and a free full-length MCAT exam.

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