MCAT Biology Practice Tests

Practice Tests

Practice Topics

• MCAT Biological Sciences

  • Biology+130 topics

    • Systems Biology and Tissue Types+84 topics

      • Circulatory and Respiratory Systems+10 topics

        • Circulatory System+5 topics

          • Heart

          • Blood Vessels and Vasculature

          • Pulmonary and Systemic Circuits

          • Hemoglobin, Blood Cells, and Blood Proteins

          • Other Circulatory Physiology

        • Respiratory System+3 topics

          • Gas Exchange

          • Respiratory Structures and Lung Mechanics

          • Other Respiratory Physiology

      • Endocrine System+12 topics

        • Glands+5 topics

          • Pituitary and Hypothalamus

          • Ovaries and Testes

          • Pancreas, Liver, and Kidney

          • Thyroid and Parathyroid

          • Other Endocrine Glands

        • Hormones+5 topics

          • Hormone Origins and Targets

          • Hormone Mechanisms and Effects

          • Types of Hormones

          • Endocrine Regulatory Mechanisms

          • Other Hormone Physiology

      • Reproductive System and Development+12 topics

        • Reproductive System+4 topics

          • Female Reproductive Physiology

          • Male Reproductive Physiology

          • Oogenesis and Spermatogenesis

          • Other Reproductive Physiology

        • Developmental Physiology+6 topics

          • Embryogenesis

          • Developmental Stages and Events

          • Fetal Circulation

          • Gastrulation and Embryonic Germ Layers

          • Regulation of Developmental Processes

      • Excretory and Digestive Systems+9 topics

        • Excretory System+3 topics

          • Kidney and Nephron Physiology

          • Excretory Regulation Mechanisms

          • Other Excretory Physiology

        • Digestive System+4 topics

          • Pancreas and Liver

          • Stomach and Small Intestine

          • Digestive Enzymes and Cell Types

          • Other Digestive Physiology

      • Immune and Lymphatic Systems+10 topics

        • Immune System+5 topics

          • Types of Immune System Cells

          • Adaptive and Innate Immunity

          • Antibodies and Antigens

          • Immune Proteins and Signals

          • Other Immunity Principles

        • Lymphatic System+3 topics

          • Lymph and Fluid Balance

          • Lymphoid Organs

          • Other Lymphatic Physiology

      • Musculoskeletal System and Muscle Tissue+10 topics

        • Muscles and Myocytes+4 topics

          • Sarcomeres

          • Muscle Stimulation and Contraction

          • Types of Muscle Cells

          • Other Muscle Concepts

        • Bone+4 topics

          • Bone Development and Growth

          • Types of Bone Cells

          • Bone Marrow and Erythropoiesis

          • Other Bone Concepts

      • Nervous System and Nervous Tissue+11 topics

        • Neurons and Action Potential+4 topics

          • Neuron Structure and Types of Neurons

          • Action Potentials and Synapse Biology

          • Neurotransmitters

          • Other Neural Physiology

        • Divisions of the Nervous System+5 topics

          • Glia

          • Brain and Central Nervous System

          • Sensory Organs

          • Sympathetic and Parasympathetic Divisions

          • Somatic and Autonomic Divisions

      • Connective Tissue and Epithelium+2 topics

        • Epithelial Tissue and Integumentary System

        • Connective Tissue Types and Properties

    • Cell Biology, Molecular Biology, and Genetics+27 topics

      • Cellular Structures and Organelles+7 topics

        • Plasma Membrane and Transport

        • Endoplasmic Reticulum and Golgi Body

        • Ribosomes and Cytoskeleton

        • Nucleus and Nucleolus

        • Mitochondria and Chloroplasts

        • Intercellular Junctions

        • Other Cell Structures

      • DNA, RNA, and Proteins+5 topics

        • DNA Replication and Repair

        • Transcription

        • Translation

        • DNA and RNA Sequencing

        • Regulation Mechanisms and Epigenetics

      • Cellular Processes and Functions+5 topics

        • Cell Cycle

        • Mitosis and Meiosis

        • Photosynthesis

        • Cell Signaling

        • Other Cell Processes

      • Genetics+6 topics

        • Genes and Chromosomes

        • Genetic Regulation and Transcription Factors

        • Mendel and Inheritance Patterns

        • Recombination and Meiosis

        • Genetic Abnormalities and Mutation

        • Population Genetics and Hardy-Weinberg

    • Microbiology+7 topics

      • Viruses

      • Viral Life Cycle

      • Prokaryotic Genetics

      • Prokaryotic Reproduction and Physiology

      • Bacteria and Types of Prokaryotes

      • Fungi

      • Other Microbiology Concepts

    • Evolution+5 topics

      • Natural Selection

      • Speciation and Phylogenetics

      • Evidence of Evolution

      • Types of Evolution and Speciation

      • Other Evolution Principles

    • Other Biology Concepts+2 topics

      • Ecological Principles

      • Other Concepts

  • Organic Chemistry, Biochemistry, and Metabolism+47 topics

    • Molecular Properties+6 topics

      • Isomerism and Stereoisomers

      • Intermolecular Forces

      • Covalent Bonds and Hybrid Orbitals

      • Other Properties of Biological Compounds

      • Functional Groups and Properties

      • Properties of Hydrocarbons

    • Macromolecules+14 topics

      • Carbohydrates+3 topics

        • Monosaccharides

        • Types of Carbohydrates

        • Properties of Carbohydrates

      • Lipids+2 topics

        • Types of Lipids

        • Properties of Lipids

      • Nucleic Acids+2 topics

        • Structure of DNA and RNA

        • Nucleotides and Nucleic Acid Dervatives

      • Proteins+3 topics

        • Amino Acids

        • Protein Structure

        • Enzymes and Enzyme Inhibition

    • Organic Analyses and Lab Techniques+5 topics

      • Compound Identification

      • Compound Quantification

      • Compound Purification

      • Other Techniques

    • Reactions+11 topics

      • Reaction Mechanisms+4 topics

        • Substitution and Elimination Mechanisms

        • Oxidation Reactions

        • Reduction Reactions

        • Other Reaction Mechanisms

      • Reaction Types+5 topics

        • Reactions with Nitrogen Compounds

        • Reactions with Ketones and Aldehydes

        • Reactions with Carboxylic Acids

        • Reactions with Hydrocarbons

        • Other Reactions

    • Biochemistry and Metabolism+6 topics

      • Glycolysis

      • Krebs Cycle

      • Electron Transport Chain and Oxidative Phosphorylation

      • Anaerobic Metabolic Pathways

      • Lipids and Metabolism

      • Other Metabolic Pathways