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MCAT Practice Questions by Topic

434 original practice questions across 48 topic pages, each with a concept primer and a full explanation for every answer. Free, no signup.

1A: Amino Acids, Proteins and Enzymes

Amino acid chemistry, protein structure, enzyme kinetics and regulation.

1B: DNA, Genetic Information and Gene Expression

Replication, transcription, translation, gene regulation and lab techniques.

1C: Heredity, Population Genetics and Evolution

Mendelian crosses, probability, pedigrees, linkage mapping and evolution.

1D: Metabolism and Bioenergetics

Glycolysis, the citric acid cycle, oxidative phosphorylation, lipid and nitrogen metabolism.

2A: Cells, Membranes and Tissues

Membrane transport, osmosis, membrane potentials, organelles and the cytoskeleton.

2B: Prokaryotes, Viruses and Microbial Genetics

Bacterial structure and growth, gene transfer, and viral life cycles.

2C: Cell Division, Development and Reproduction

Fertilization, early development, germ layers, induction and stem cell potency.

3A: Nervous and Endocrine Systems

Action potentials, synapses, the senses, hormones and feedback axes.

3B: Organ Systems

Kidney, cardiovascular, respiratory and immune physiology.

4A: Motion, Forces, Work and Energy

Work, energy conservation, power and simple machines.

4B: Fluids and Gas Behavior

Hydrostatic pressure, buoyancy, continuity, Bernoulli and Poiseuille flow.

4C: Electrostatics, Circuits, Magnetism and Electrochemistry

Ohm's law, series and parallel resistors, Kirchhoff's rules and circuit power.

4D: Waves, Sound, Light and Optics

Mirrors, thin lenses, lens power, the eye and vision correction.

4E: Atoms, Nuclear Chemistry and the Periodic Table

Isotopes, radioactive decay, half-life, binding energy, fission and fusion.

5A: Water, Solutions, Acids and Bases

pH, weak acids, buffers, titrations and indicators.

5B: Bonding, Molecular Structure and Stereochemistry

Chirality, R and S configuration, enantiomers, diastereomers and optical activity.

5C: Separations, Purification and Spectroscopy

IR, NMR, mass spectrometry and UV-Vis spectroscopy.

5D: Biologically Relevant Molecules and Organic Reactivity

Carbohydrates, lipids, carbonyl chemistry, acid derivatives, peptides and nucleotides.

5E: Chemical Thermodynamics and Kinetics

Rate laws, reaction order, Arrhenius behavior, mechanisms and catalysts.

6A: Sensation and Perception

Thresholds, Weber's law, signal detection, sensory adaptation and perception.

6B: Attention, Cognition, Consciousness, Memory and Language

Memory systems, encoding, retrieval and forgetting, and the biology of memory.

6C: Emotion and Stress

Theories of emotion, the limbic system, autonomic arousal and stress.

7A: Biological and Individual Influences on Behavior

Psychological disorders, their diagnosis and their biological bases.

7B: Social Processes and Group Behavior

Conformity, obedience, group performance and group decision making.

7C: Learning and Attitude Change

Classical and operant conditioning, reinforcement schedules and cognitive learning.

8A: Self-Concept, Identity and Personality Formation

Erikson, Freud, Kohlberg, Vygotsky, Mead and identity development.

8B: Social Thinking: Attribution, Prejudice and Stereotypes

Attribution theory, attribution biases, halo effect and impression formation.

8C: Social Interactions and Relationships

Statuses, roles, groups, networks, bureaucracy and dramaturgy.

9A: Social Structure, Theories and Institutions

Functionalism, conflict theory, symbolic interactionism and other sociological paradigms.

9B: Demographics and Demographic Change

Population growth, demographic transition, pyramids, dependency ratios and migration.

10A: Social Inequality and Health Disparities

Social class, mobility, poverty, meritocracy and social capital.