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MCAT Biology Notes

Topic-wise MCAT Biology notes aligned with the AAMC content outline — cell biology, biological molecules, coordination & control, genetics, reproduction, circulation and more. High-yield coverage for the Biological and Biochemical Foundations section.

17 chapters — pick any chapter below or use the sidebar to drill into a specific subtopic. Every page covers structured concept summaries, key definitions, common exam traps, and 5 worked MCQs.

All Biology Chapters

Acellular Life

2 subtopics · viruses, HIV/AIDS

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Bioenergetics

1 subtopic · cellular respiration

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Biological Molecules

8 subtopics · carbs, lipids, proteins, DNA, RNA

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Biotechnology

1 subtopic · biotech in healthcare

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Cell Structure and Function

4 subtopics · organelles, chromosomes, prokaryote vs eukaryote

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Circulation

4 subtopics · heart, vessels, cardiac cycle, lymphatic

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Coordination and Control

3 subtopics · neuron, action potential, spinal cord

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Nervous and Chemical Coordination

7 subtopics · brain, synapse, endocrine, feedback

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Digestion

1 subtopic · human digestive system

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Homeostasis

3 subtopics · excretion, kidney, thermoregulation

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Immunity

1 subtopic · specific defense, antibodies

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Inheritance

3 subtopics · Mendel, linkage, X-linked

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Nutrition & Bioenergetics

4 subtopics · autotrophs/heterotrophs, photosynthesis vs respiration, nutrients, vitamins

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Reproduction

5 subtopics · meiosis, gametogenesis, menstrual cycle, fertilization, development

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Respiration

1 subtopic · human respiratory system

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Support and Movement

6 subtopics · skeleton, joints, muscle contraction

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Transport

4 subtopics · blood composition, gas transport, blood groups, hemostasis

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How to use these notes

  1. Read the chapter notes to build the concept layer.
  2. Take a timed practice test on the chapter to validate recall under pressure.
  3. Review wrong answers and re-read the relevant subtopic section in the notes.
  4. Once comfortable, attempt full-length mocks on Practice Test.