What courses to take before MCAT must include introductory biology, general chemistry, organic chemistry, physics, and psychology to meet medical school prerequisites and align with the exam's content outline. These courses build foundational knowledge tested across the four MCAT sections.
The MCAT assesses knowledge in biological and biochemical foundations, chemical and physical foundations, psychological, social, and behavioral foundations, and critical analysis and reasoning skills. To succeed, students must complete specific undergraduate coursework that reflects the competencies outlined by the Association of American Medical Colleges (AAMC).
Most accredited U.S. medical schools require applicants to have completed at least one year each of general biology, general chemistry, organic chemistry, and physics, along with one course in biochemistry and one in psychology. These courses are not optional-they form the academic basis for the MCAT's content categories.
General biology (BIOL 101/102) covers cellular structure, genetics, evolution, and human physiology. This content maps directly to the Biological and Biochemical Foundations of Living Systems section of the MCAT, which makes up 65% of the exam.
General chemistry (CHEM 101/102) introduces atomic structure, thermodynamics, equilibrium, and reaction kinetics. These topics appear in the Chemical and Physical Foundations of Biological Systems section, which accounts for 30% of the test.
Organic chemistry (ORG 101/102) focuses on carbon-based compounds, reaction mechanisms, and functional groups. It supports understanding of metabolic pathways and drug interactions tested in both the biological and chemical sections.
Physics (PHYS 101/102) teaches mechanics, electricity, magnetism, and waves. This knowledge is applied in the physical sciences portion of the MCAT, especially in problems involving force, energy, and motion.
Biochemistry (BCHM 300) is increasingly expected by medical schools. The AAMC states that 94% of medical schools require or recommend biochemistry, and it appears in 25% of the Biological and Biochemical Foundations section.
Psychology and sociology are mandatory for the Psychological, Social, and Behavioral Foundations of Behavior section, which constitutes 25% of the MCAT. Students must take at least one course in psychology and one in sociology to understand health disparities, behavior change, and cultural influences on patient care.
| Course Type | Required For MCAT? | Content Area Covered | AAMC Reference |
|---|---|---|---|
| General Biology | Yes | Cellular processes, genetics, human systems | AAMC MCAT Content Outline |
| General Chemistry | Yes | Atomic theory, reactions, thermodynamics | AAMC MCAT Content Outline |
| Organic Chemistry | Yes | Molecular structure, reaction mechanisms | AAMC MCAT Content Outline |
| Physics | Yes | Forces, energy, waves, electromagnetism | AAMC MCAT Content Outline |
| Psychology | Yes | Behavioral development, cognition, mental health | AAMC MCAT Content Outline |
| Sociology | Yes | Social determinants of health, healthcare access | AAMC MCAT Content Outline |
Many students assume that taking advanced courses like molecular biology or neuroscience gives an edge. But the MCAT does not test graduate-level material. Instead, it evaluates mastery of core concepts taught in standard undergraduate courses. A student who excels in BIOL 101 and CHEM 101 will perform better than one who takes a specialized course without completing the required curriculum.
One common misconception is that calculus is required for the MCAT. While physics and chemistry involve quantitative reasoning, the MCAT does not test calculus. Only basic algebra and graph interpretation are needed. The AAMC confirms that mathematical proficiency at the high school level is sufficient for success.
Consider a student named Maya who plans to apply to medical school in 2025. She enters college as a pre-med major and follows this plan:
By the time she takes the MCAT, Maya has completed all required courses. Her preparation includes reviewing lecture notes, practicing with AAMC official practice exams, and attending weekly study groups. She scores in the 90th percentile on the MCAT, placing her in a competitive pool for medical school admissions.
She later reflects: "I spent too much time trying to find 'secret' courses that would boost my score. The truth is, mastering the basics in biology, chemistry, and psychology was enough."
Students often delay taking physics until their junior year, assuming they can cram it later. But physics builds on algebra and trigonometry, and its concepts-like vector forces and electric fields-are cumulative. Taking it early ensures retention and reduces stress during MCAT prep.
Another mistake is skipping psychology and sociology. Some students believe these subjects are less relevant to medicine. But the MCAT includes passages on patient decision-making, cultural barriers to care, and mental health stigma. Without prior exposure, students struggle to interpret these scenarios.
Some institutions offer "MCAT prep" courses that claim to cover everything. These are not substitutes for formal coursework. The AAMC emphasizes that content knowledge must come from accredited science courses-not tutoring sessions or review books.
Finally, students sometimes think they can fulfill prerequisites through online or accelerated programs. While some schools accept transfer credits, most medical schools require that science courses be taken in person at regionally accredited institutions. Online courses may not count toward prerequisite fulfillment.
What courses to take before MCAT is not a flexible list-it's a structured set of science and social science courses designed to prepare students for clinical reasoning, ethical decision-making, and patient-centered care. Completing them systematically increases both MCAT performance and long-term readiness for medical training.