FREE
MCAT Biology Practice Tests

Free MCAT Biology Practice Tests

Our completely free MCAT Biology practice tests are the perfect way to brush up your skills. Take one of our many MCAT Biology practice tests for a run-through of commonly asked questions. You will receive incredibly detailed scoring results at the end of your MCAT Biology practice test to help you identify your strengths and weaknesses. Pick one of our MCAT Biology practice tests now and begin!

Practice Tests by Concept

Biology practice test

Questions: 40
Test Difficulty:
Average Time Spent: 27 mins

Cell biology, molecular biology, and genetics practice test

Questions: 17
Test Difficulty:
Average Time Spent: 43 mins

Cellular processes and functions practice test

Questions: 10
Test Difficulty:
Average Time Spent: 7 mins

Cell cycle practice test

Questions: 2
Test Difficulty:
Average Time Spent: 34 secs

Cell signaling practice test

Questions: 2
Test Difficulty:
Average Time Spent: 2 mins 53 secs

Mitosis and meiosis practice test

Questions: 2
Test Difficulty:
Average Time Spent: 19 mins

Other cell processes practice test

Questions: 2
Test Difficulty:
Average Time Spent: 54 secs

Cellular structures and organelles practice test

Questions: 6
Test Difficulty:
Average Time Spent: 2 mins 55 secs

Endoplasmic reticulum and golgi body practice test

Questions: 11
Test Difficulty:
Average Time Spent: 5 mins

Intercellular junctions practice test

Questions: 5
Test Difficulty:
Average Time Spent: 3 mins

Mitochondria and chloroplasts practice test

Questions: 9
Test Difficulty:
Average Time Spent: 6 mins

Nucleus and nucleolus practice test

Questions: 7
Test Difficulty:
Average Time Spent: 3 mins

Other cell structures practice test

Questions: 6
Test Difficulty:
Average Time Spent: 3 mins

Plasma membrane and proteins practice test

Questions: 6
Test Difficulty:
Average Time Spent: 3 mins

Ribosomes and cytoskeleton practice test

Questions: 18
Test Difficulty:
Average Time Spent: 5 mins

Dna, rna, and proteins practice test

Questions: 28
Test Difficulty:
Average Time Spent: 37 mins

Dna and rna sequencing practice test

Questions: 5
Test Difficulty:
Average Time Spent: 3 mins

Dna replication and repair practice test

Questions: 9
Test Difficulty:
Average Time Spent: 4 mins

Regulation mechanisms and epigenetics practice test

Questions: 4
Test Difficulty:
Average Time Spent: 2 mins 26 secs

Transcription practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 12 secs

Translation practice test

Questions: 2
Test Difficulty:
Average Time Spent: 49 secs

Genetics practice test

Questions: 17
Test Difficulty:
Average Time Spent: 12 mins

Genes and chromosomes practice test

Questions: 6
Test Difficulty:
Average Time Spent: 2 mins 51 secs

Genetic abnormalities and mutation practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 25 secs

Mendel and inheritance patterns practice test

Questions: 39
Test Difficulty:
Average Time Spent: 27 mins

Population genetics and hardy-weinberg practice test

Questions: 18
Test Difficulty:
Average Time Spent: 8 mins

Recombination and meiosis practice test

Questions: 3
Test Difficulty:
Average Time Spent: 51 secs

Evolution practice test

Questions: 3
Test Difficulty:

Natural selection practice test

Questions: 4
Test Difficulty:
Average Time Spent: 2 mins 45 secs

Speciation and phylogenetics practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 19 secs

Types of evolution and speciation practice test

Questions: 3
Test Difficulty:
Average Time Spent: 46 secs

Microbiology practice test

Questions: 40
Test Difficulty:

Bacteria and types of prokaryotes practice test

Questions: 33
Test Difficulty:
Average Time Spent: 10 mins

Fungi practice test

Questions: 7
Test Difficulty:

Other microbiology concepts practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 10 secs

Prokaryotic genetics practice test

Questions: 15
Test Difficulty:
Average Time Spent: 3 mins

Prokaryotic reproduction and physiology practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 31 secs

Viral life cycle practice test

Questions: 7
Test Difficulty:
Average Time Spent: 2 mins 35 secs

Viruses practice test

Questions: 11
Test Difficulty:

Other biology concepts practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 29 secs

Other concepts practice test

Questions: 4
Test Difficulty:
Average Time Spent: 28 secs

Systems biology and tissue types practice test

Questions: 40
Test Difficulty:
Average Time Spent: 25 mins

Circulatory and respiratory systems practice test

Questions: 40
Test Difficulty:
Average Time Spent: 25 mins

Blood vessels and vasculature practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 hrs 44 mins

Heart practice test

Questions: 22
Test Difficulty:
Average Time Spent: 10 mins

Hemoglobin, blood cells, and blood proteins practice test

Questions: 35
Test Difficulty:
Average Time Spent: 13 mins

Other circulatory physiology practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 33 secs

Pulmonary and systemic circuits practice test

Questions: 9
Test Difficulty:
Average Time Spent: 2 mins 30 secs

Gas exchange practice test

Questions: 3
Test Difficulty:
Average Time Spent: 5 mins

Other respiratory physiology practice test

Questions: 4
Test Difficulty:
Average Time Spent: 7 mins

Respiratory structures and lung mechanics practice test

Questions: 15
Test Difficulty:
Average Time Spent: 4 mins

Connective tissue and epithelium practice test

Questions: 11
Test Difficulty:
Average Time Spent: 4 mins

Connective tissue types and properties practice test

Questions: 6
Test Difficulty:
Average Time Spent: 2 mins 19 secs

Epithelial tissue and integumentary system practice test

Questions: 9
Test Difficulty:
Average Time Spent: 3 mins

Endocrine system practice test

Questions: 40
Test Difficulty:

Glands practice test

Questions: 22
Test Difficulty:
Average Time Spent: 7 mins

Other endocrine glands practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 40 secs

Pancreas, liver, and kidney practice test

Questions: 5
Test Difficulty:
Average Time Spent: 1 mins 4 secs

Pituitary and hypothalamus practice test

Questions: 11
Test Difficulty:
Average Time Spent: 3 mins

Thyroid and parathyroid practice test

Questions: 2
Test Difficulty:
Average Time Spent: 32 secs

Hormones practice test

Questions: 40
Test Difficulty:
Average Time Spent: 6 mins

Endocrine regulatory mechanisms practice test

Questions: 4
Test Difficulty:
Average Time Spent: 2 mins 59 secs

Hormone mechanisms and effects practice test

Questions: 25
Test Difficulty:
Average Time Spent: 9 mins

Hormone origins and targets practice test

Questions: 8
Test Difficulty:
Average Time Spent: 3 mins

Types of hormones practice test

Questions: 10
Test Difficulty:
Average Time Spent: 3 mins

Excretory and digestive systems practice test

Questions: 40
Test Difficulty:
Average Time Spent: 28 mins

Digestive system practice test

Questions: 40
Test Difficulty:

Digestive enzymes and cell types practice test

Questions: 21
Test Difficulty:
Average Time Spent: 7 mins

Other digestive physiology practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 24 secs

Pancreas and liver practice test

Questions: 12
Test Difficulty:
Average Time Spent: 2 mins 29 secs

Excretory system practice test

Questions: 40
Test Difficulty:

Kidney and nephron physiology practice test

Questions: 32
Test Difficulty:
Average Time Spent: 36 mins

Immune and lymphatic systems practice test

Questions: 2
Test Difficulty:
Average Time Spent: 24 secs

Immune system practice test

Questions: 40
Test Difficulty:

Adaptive and innate immunity practice test

Questions: 7
Test Difficulty:
Average Time Spent: 2 mins 26 secs

Antibodies and antigens practice test

Questions: 19
Test Difficulty:
Average Time Spent: 6 mins

Types of immune system cells practice test

Questions: 4
Test Difficulty:
Average Time Spent: 50 secs

Lymphatic system practice test

Questions: 2
Test Difficulty:

Lymph and fluid balance practice test

Questions: 7
Test Difficulty:
Average Time Spent: 38 secs

Lymphoid organs practice test

Questions: 3
Test Difficulty:
Average Time Spent: 25 secs

Other lymphatic physiology practice test

Questions: 4
Test Difficulty:
Average Time Spent: 2 mins 49 secs

Musculoskeletal system and muscle tissue practice test

Questions: 40
Test Difficulty:
Average Time Spent: 37 mins

Bone practice test

Questions: 19
Test Difficulty:
Average Time Spent: 7 mins

Bone development and growth practice test

Questions: 3
Test Difficulty:
Average Time Spent: 1 mins 37 secs

Other bone concepts practice test

Questions: 8
Test Difficulty:
Average Time Spent: 42 secs

Types of bone cells practice test

Questions: 8
Test Difficulty:
Average Time Spent: 51 secs

Muscles and myocytes practice test

Questions: 40
Test Difficulty:
Average Time Spent: 46 mins

Muscle stimulation and contraction practice test

Questions: 4
Test Difficulty:
Average Time Spent: 57 secs

Other muscle concepts practice test

Questions: 4
Test Difficulty:
Average Time Spent: 24 secs

Sarcomeres practice test

Questions: 3
Test Difficulty:
Average Time Spent: 36 secs

Types of muscle cells practice test

Questions: 14
Test Difficulty:
Average Time Spent: 1 mins 20 secs

Nervous system and nervous tissue practice test

Questions: 40
Test Difficulty:
Average Time Spent: 23 mins

Divisions of the nervous system practice test

Questions: 40
Test Difficulty:
Average Time Spent: 45 mins

Brain and central nervous system practice test

Questions: 6
Test Difficulty:
Average Time Spent: 1 mins 6 secs

Glia practice test

Questions: 10
Test Difficulty:
Average Time Spent: 2 mins 28 secs

Sensory organs practice test

Questions: 26
Test Difficulty:
Average Time Spent: 6 mins

Sympathetic and parasympathetic divisions practice test

Questions: 7
Test Difficulty:
Average Time Spent: 1 mins 31 secs

Neurons and action potential practice test

Questions: 37
Test Difficulty:
Average Time Spent: 25 mins

Action potentials and synapse biology practice test

Questions: 5
Test Difficulty:
Average Time Spent: 2 mins 51 secs

Neuron structure and types of neurons practice test

Questions: 8
Test Difficulty:
Average Time Spent: 3 mins

Neurotransmitters practice test

Questions: 2
Test Difficulty:
Average Time Spent: 25 secs

Reproductive system and development practice test

Questions: 40
Test Difficulty:
Average Time Spent: 49 mins

Fetal circulation practice test

Questions: 2
Test Difficulty:
Average Time Spent: 46 secs

Female reproductive physiology practice test

Questions: 4
Test Difficulty:
Average Time Spent: 1 mins 24 secs

Oogenesis and spermatogenesis practice test

Questions: 2
Test Difficulty:
Average Time Spent: 57 secs

Organic chemistry, biochemistry, and metabolism practice test

Questions: 40
Test Difficulty:
Average Time Spent: 9 hrs 13 mins

Biochemistry and metabolism practice test

Questions: 40
Test Difficulty:
Average Time Spent: 37 mins

Anaerobic metabolic pathways practice test

Questions: 6
Test Difficulty:
Average Time Spent: 1 mins 32 secs

Electron transport chain and oxidative phosphorylation practice test

Questions: 17
Test Difficulty:
Average Time Spent: 6 mins

Glycolysis practice test

Questions: 9
Test Difficulty:
Average Time Spent: 55 mins

Krebs cycle practice test

Questions: 6
Test Difficulty:
Average Time Spent: 1 mins 12 secs

Lipids and metabolism practice test

Questions: 2
Test Difficulty:
Average Time Spent: 10 secs

Other metabolic pathways practice test

Questions: 4
Test Difficulty:
Average Time Spent: 19 secs

Macromolecules practice test

Questions: 40
Test Difficulty:

Carbohydrates practice test

Questions: 11
Test Difficulty:

Properties of carbohydrates practice test

Questions: 4
Test Difficulty:
Average Time Spent: 51 secs

Types of carbohydrates practice test

Questions: 4
Test Difficulty:
Average Time Spent: 34 secs

Lipids practice test

Questions: 16
Test Difficulty:

Properties of lipids practice test

Questions: 9
Test Difficulty:
Average Time Spent: 3 mins

Types of lipids practice test

Questions: 2
Test Difficulty:
Average Time Spent: 15 secs

Nucleic acids practice test

Questions: 24
Test Difficulty:
Average Time Spent: 16 mins

Structure of dna and rna practice test

Questions: 11
Test Difficulty:
Average Time Spent: 7 mins

Proteins practice test

Questions: 38
Test Difficulty:

Amino acids practice test

Questions: 20
Test Difficulty:

Enzymes and enzyme inhibition practice test

Questions: 2
Test Difficulty:
Average Time Spent: 43 secs

Protein structure practice test

Questions: 10
Test Difficulty:
Average Time Spent: 1 mins 36 secs

Molecular properties practice test

Questions: 30
Test Difficulty:
Average Time Spent: 17 mins

Covalent bonds and hybrid orbitals practice test

Questions: 26
Test Difficulty:
Average Time Spent: 48 mins

Functional groups and properties practice test

Questions: 2
Test Difficulty:
Average Time Spent: 1 mins 9 secs

Intermolecular forces practice test

Questions: 4
Test Difficulty:
Average Time Spent: 9 mins

Isomerism and stereoisomers practice test

Questions: 23
Test Difficulty:
Average Time Spent: 24 mins

Other properties of biological compounds practice test

Questions: 6
Test Difficulty:
Average Time Spent: 3 mins

Properties of hydrocarbons practice test

Questions: 9
Test Difficulty:
Average Time Spent: 4 mins

Organic analyses and lab techniques practice test

Questions: 40
Test Difficulty:
Average Time Spent: 27 mins

Compound identification practice test

Questions: 21
Test Difficulty:
Average Time Spent: 11 mins

Compound purification practice test

Questions: 5
Test Difficulty:
Average Time Spent: 38 secs

Reactions practice test

Questions: 2
Test Difficulty:
Average Time Spent: 4 mins

Reaction mechanisms practice test

Questions: 9
Test Difficulty:
Average Time Spent: 17 mins

Substitution and elimination mechanisms practice test

Questions: 9
Test Difficulty:
Average Time Spent: 5 mins

Reaction types practice test

Questions: 2
Test Difficulty:
Average Time Spent: 45 secs

Other reactions practice test

Questions: 4
Test Difficulty:
Average Time Spent: 5 mins

Reactions with hydrocarbons practice test

Questions: 8
Test Difficulty:
Average Time Spent: 7 mins

Reactions with ketones and aldehydes practice test

Questions: 3
Test Difficulty:
Average Time Spent: 3 mins

Practice Quizzes

MCAT Biology Problem Set 145 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 142 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 140 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 139 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 138 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 137 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 136 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 135 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 134 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 133 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 132 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 131 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 130 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 129 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 128 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 127 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 125 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 124 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 123 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 122 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 121 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 12 mins

MCAT Biology Problem Set 120 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 119 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 16 mins

MCAT Biology Problem Set 118 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 10 mins

MCAT Biology Problem Set 117 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biology Problem Set 116 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 115 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 114 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 15 mins

MCAT Biology Problem Set 113 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 111 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 110 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 109 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 108 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 107 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 106 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 17 mins

MCAT Biology Problem Set 105 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 104 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 103 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 102 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 101 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 98 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 97 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 10 mins

MCAT Biology Problem Set 96 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 12 mins

MCAT Biology Problem Set 94 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 93 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 92 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 91 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 90 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 88 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 86 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 84 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 83 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biology Problem Set 81 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 80 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 79 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 78 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 14 mins

MCAT Biology Problem Set 77 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 76 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 75 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 74 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 73 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biology Problem Set 72 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 70 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 69 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 68 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 67 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 66 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 65 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 64 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 63 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 62 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 61 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 60 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 59 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 58 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 57 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biology Problem Set 56 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biology Problem Set 55 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 54 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 12 mins

MCAT Biology Problem Set 53 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biology Problem Set 52 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 51 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 50 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 10 mins

MCAT Biology Problem Set 49 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 48 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 47 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 46 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 45 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 44 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 43 Practice Test

Questions: 14
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biology Problem Set 42 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 41 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biology Problem Set 40 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 39 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biological Sciences Problem Set 39 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biology Problem Set 38 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 16 mins

MCAT Biology Problem Set 37 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biological Sciences Problem Set 37 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biology Problem Set 36 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biological Sciences Problem Set 36 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 10 mins

MCAT Biology Problem Set 35 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biological Sciences Problem Set 35 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biology Problem Set 34 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biological Sciences Problem Set 34 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biological Sciences Problem Set 33 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biological Sciences Problem Set 30 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 3 mins

MCAT Biological Sciences Problem Set 29 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biological Sciences Problem Set 28 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biological Sciences Problem Set 27 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 2 mins 31 secs

MCAT Biological Sciences Problem Set 26 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biological Sciences Problem Set 24 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biological Sciences Problem Set 23 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biological Sciences Problem Set 22 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biological Sciences Problem Set 21 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biological Sciences Problem Set 20 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 9 mins

MCAT Biological Sciences Problem Set 19 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 11 mins

MCAT Biological Sciences Problem Set 18 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biological Sciences Problem Set 17 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biological Sciences Problem Set 16 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biological Sciences Problem Set 15 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 14 mins

MCAT Biological Sciences Problem Set 14 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 11 mins

MCAT Biological Sciences Problem Set 13 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 13 mins

MCAT Biological Sciences Problem Set 11 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biological Sciences Problem Set 10 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biological Sciences Problem Set 9 Practice Test

Questions: 12
Test Difficulty:
Average Time Spent: 8 mins

MCAT Biological Sciences Problem Set 7 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 7 mins

MCAT Biological Sciences Problem Set 6 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biological Sciences Problem Set 5 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 5 mins

MCAT Biological Sciences Problem Set 4 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 4 mins

MCAT Biological Sciences Problem Set 3 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 1 mins 36 secs

MCAT Biological Sciences Problem Set 2 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 6 mins

MCAT Biological Sciences Problem Set 1 Practice Test

Questions: 10
Test Difficulty:
Average Time Spent: 7 mins

Our free MCAT Biological Sciences Practice Tests are each a selection of 10 to 12 questions, which will give you a cross-section of topics from the Biological Sciences section of the official MCAT. You might think of them as little quizzes, which you can use to hone your skills.

MCAT Biological Sciences Section

What does the MCAT Biological Sciences section cover?

The MCAT Biological Sciences section can be broken into two generalized categories: organic chemistry and biological sciences. When taking this section of the MCAT, test takers are often presented with passages that provide highly specific details about complex biological functions. Questions then require test takers to integrate the provided specific information with generalized biology concepts to draw conclusions. Material in this section includes organic chemistry reactions and mechanisms, cell biology, molecular biology, evolution and genetics, systems biology, and some biochemistry.

How many problems are on the MCAT Biological Sciences section, and how much time do I have to complete them?

The MCAT Biological Sciences section consists of 52 questions. 70 minutes are allotted for this section. Approximately 40 to 45 questions will be based on passages, and the remaining questions will be stand-alone questions that do not have any background information provided.

Should I guess on the MCAT Biological Sciences section?

There is no guessing penalty on the MCAT. Scores are based on the number of questions answered correctly, and are not affected by questions skipped or answered incorrectly. It is a good strategy to answer every question on the exam, even if you must guess.

What kinds of problems are on the MCAT Biological Sciences section?

Questions in the MCAT Biological Sciences section can be passage-based or discrete. Discrete questions will generally be straightforward, asking for identification of biological terms and concepts or conclusions based on one to two sentences. Passage-based questions vary in content and structure. Some passages provide information about certain processes, while others provide experimental setups or data for analysis. Be prepared to identify new information that is provided in the passages and draw connections to your experiences with college coursework and material. Many questions will require application of general biological concepts to specific scenarios described in the passages.

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