Ace the MCAT Biological Sciences Section

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The Biological & Biochemical Foundations of Living Systems section of the MCAT is 95-minute long and contains 59 multiple-choice questions. This section asks you to combine your knowledge of foundational concepts in the biological and biochemical sciences with your scientific inquiry, reasoning, and research and statistics skills to solve problems that demonstrate readiness for medical school.

Understanding the processes unique to living organisms, such as growing and reproducing, maintaining a constant internal environment, acquiring materials and energy, sensing and responding to environmental changes, and adapting, is important to the study of medicine.

You will be tested on your knowledge of how cells and organ systems within an organism act both independently and in concert to accomplish these processes, as well as your ability to reason about these processes at various levels of biological organization within a living system.

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Dr. Donnelly can teach you the correct approach for the passage-based questions that will appear on the Biology section of the MCAT. This will significantly increase your chance of getting your target score to attend the medical school of your choice.

Private lessons with Dr. Donnelly are available either online via Zoom or in-person at our San Diego, California office or Manhattan, New York office (depending upon the time of year).

Over the years, Dr. Donnelly has helped literally hundreds of students to improve their MCAT scores significantly and achieve their goal of getting accepted into a top-tier medical program. We are confident that he can do the same for you.

MCAT Biology Section

Three Key Concepts Tested

Foundational Concept 1: Biomolecules have unique properties that determine how they contribute to the structure and function of cells, and how they participate in the processes necessary to maintain life.

  • 1A: Structure and function of proteins and their constituent amino acids
  • 1B: Transmission of genetic information from the gene to the protein
  • 1C: Transmission of heritable information from generation to generation and the processes that increase genetic diversity
  • 1D: Principles of bioenergetics and fuel molecule metabolism
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Foundational Concept 2: Highly-organized assemblies of molecules, cells, and organs interact to carry out the functions of living organisms.

  • 2A: Assemblies of molecules, cells, and groups of cells within single cellular and multicellular organisms
  • 2B: The structure, growth, physiology, and genetics of prokaryotes and viruses
  • 2C: Processes of cell division, differentiation, and specialization
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Foundational Concept 3: Complex systems of tissues and organs sense the internal and external environments of multicellular organisms, and through integrated functioning, maintain a stable internal environment within an ever-changing external environment.

  • 3A: Structure and functions of the nervous and endocrine systems and ways in which these systems coordinate the organ systems
  • 3B: Structure and integrative functions of the main organ systems
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Click on the links below to learn more:

  1. About the MCAT
  2. MCAT Test Dates 2023
  3. Contact Dr. Donnelly about MCAT lessons
  4. Read our MCAT students' reviews
  5. MCAT Exam - Section by Section
    1. Biological & Biochemical Foundations of Living Systems
    2. Chemical & Physical Foundations of Biological Systems
    3. Psychological, Social, & Biological Foundations of Behavior
    4. Critical Analysis & Reasoning Skills (CARS)

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