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MDCAT full mock (all subjects) MCQs with answers

Practise MDCAT full mock (all subjects) (PMDC 2025-26) with 2053 exam-style MCQs, each with the answer and a short explanation. Every test is marked the moment you finish and shows your score chapter by chapter, so you know what to revise next. It is free and needs no sign-up.

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MDCAT full mock (all subjects) MCQs with answers

Practise MDCAT full mock (all subjects) (PMDC 2025-26) with 2053 exam-style MCQs, each with the answer and a short explanation. Every test is marked the moment you finish and shows your score chapter by chapter, so you know what to revise next. It is free and needs no sign-up.

2053 questions · 60 chapters

What each chapter covers 60 chapters

The questions follow the syllabus chapter by chapter. You can test the whole subject or one chapter at a time.

  1. Biology · Acellular life 26 questionsViruses: structure and classification, Viral replication and disease
  2. Biology · Bioenergetics 35 questionsPhotosynthesis, Cellular respiration
  3. Biology · Biological molecules 62 questionsWater and carbohydrates, Proteins and lipids, Nucleic acids
  4. Biology · Cell structure and function 52 questionsCell membrane and transport, Organelles, Prokaryotic and eukaryotic cells
  5. Biology · Coordination and control 57 questionsNeurons and the nerve impulse, The nervous system, Chemical coordination
  6. Biology · Enzymes 28 questionsEnzyme action, Factors and inhibition
  7. Biology · Evolution 31 questionsTheories of evolution, Evidence and speciation
  8. Biology · Reproduction 31 questionsHuman reproductive systems, Reproductive cycle and development
  9. Biology · Support and movement 30 questionsSkeleton and joints, Muscles and contraction
  10. Biology · Inheritance 46 questionsMendelian inheritance, Beyond simple dominance, Sex linkage and chromosomes
  11. Biology · Circulation 48 questionsThe heart, Blood and blood vessels, Lymphatic system and disorders
  12. Biology · Immunity 28 questionsInnate and adaptive immunity, Types of immunity and vaccination
  13. Biology · Respiration 26 questionsRespiratory system and breathing, Gas transport and disorders
  14. Biology · Digestion 27 questionsAlimentary canal and enzymes, Absorption, liver and disorders
  15. Biology · Homeostasis 35 questionsOsmoregulation and the kidney, Thermoregulation and excretion
  16. Biology · Biotechnology 30 questionsRecombinant DNA techniques, Applications of biotechnology
  17. Chemistry · Fundamental concepts of chemistry 34 questionsThe mole, Stoichiometry
  18. Chemistry · Atomic structure 40 questionsParticles, photons and the Bohr model, Orbitals and electronic configuration
  19. Chemistry · Gases 30 questionsGas laws, Kinetic theory and real gases
  20. Chemistry · Liquids 45 questionsIntermolecular forces, Properties of liquids
  21. Chemistry · Solids 37 questionsCrystalline solids
  22. Chemistry · Chemical equilibrium 49 questionsEquilibrium and Le Chatelier's principle, Ionic equilibria
  23. Chemistry · Reaction kinetics 39 questionsRate and rate law, Activation energy and catalysis
  24. Chemistry · Thermochemistry and energetics 32 questionsEnthalpy changes, First law and Hess's law
  25. Chemistry · Electrochemistry 29 questionsOxidation numbers and redox, Electrode potentials and cells
  26. Chemistry · Chemical bonding 51 questionsIonic and covalent bonding, Shapes of molecules
  27. Chemistry · s and p block elements 61 questionsPeriodic trends and the s block, The p block
  28. Chemistry · Transition elements 37 questionsProperties of transition elements, Complexes
  29. Chemistry · Fundamental principles of organic chemistry 39 questionsClassification and isomerism, Bonding and reactivity in carbon compounds
  30. Chemistry · Hydrocarbons 55 questionsAlkanes and alkenes, Alkynes and benzene
  31. Chemistry · Alkyl halides 30 questionsAlkyl halides
  32. Chemistry · Alcohols and phenols 63 questionsAlcohols, Phenols and ethers
  33. Chemistry · Aldehydes and ketones 40 questionsAldehydes and ketones
  34. Chemistry · Carboxylic acids 51 questionsCarboxylic acids and derivatives
  35. Chemistry · Macromolecules 48 questionsPolymers, Biological macromolecules
  36. Chemistry · Industrial chemistry 10 questionsIndustrial chemistry
  37. Physics · Vectors and equilibrium 18 questionsVectors and components, Products of vectors and torque
  38. Physics · Force and motion 27 questionsKinematics, Newton's laws and momentum, Projectile motion
  39. Physics · Work, power and energy 18 questionsWork and power, Energy and its conservation
  40. Physics · Circular and rotational motion 18 questionsAngular motion and centripetal force, Rotational dynamics
  41. Physics · Fluid dynamics 18 questionsViscosity and drag, Continuity and Bernoulli
  42. Physics · Waves and oscillations 27 questionsSimple harmonic motion, Progressive waves, Stationary waves and sound
  43. Physics · Thermodynamics 18 questionsKinetic theory and the first law, Heat engines and entropy
  44. Physics · Electrostatics 18 questionsCoulomb's law and electric field, Potential and capacitors
  45. Physics · Current electricity 18 questionsResistance and Ohm's law, Circuits, EMF and power
  46. Physics · Electromagnetism 18 questionsMagnetic fields and forces, Charges in magnetic fields
  47. Physics · Electromagnetic induction 19 questionsFaraday's and Lenz's laws, Inductance, generators and transformers
  48. Physics · Alternating current 19 questionsAC quantities, AC circuits
  49. Physics · Physics of solids and electronics 20 questionsProperties of solids, Electronics
  50. Physics · Dawn of modern physics 20 questionsPhotons and the photoelectric effect, Wave nature of particles
  51. Physics · Atomic spectra 19 questionsBohr model and spectra, X-rays and lasers
  52. Physics · Nuclear physics 20 questionsNucleus and radioactivity, Nuclear energy and radiation
  53. English · Grammar and usage 66 questionsTenses and verb forms, Agreement, articles and prepositions, Voice and reported speech
  54. English · Error and correction 44 questionsSpot the error, Sentence correction
  55. English · Vocabulary 44 questionsWords in context, Sentence completion
  56. English · Reading 22 questionsShort passages
  57. Logical reasoning · Critical thinking 25 questionsCritical thinking
  58. Logical reasoning · Series 25 questionsLetter and symbol series
  59. Logical reasoning · Deduction 50 questionsLogical deductions, Logical problems
  60. Logical reasoning · Decisions 50 questionsCourse of action, Cause and effect
Sample MDCAT full mock (all subjects) MCQs with answers 12 questions

12 questions from the test, one or two from each chapter. Try each one, then open the answer.

1. In the name AIDS (acquired immune deficiency syndrome), the word "acquired" means that the disease

  1. A
    is inherited from a parent through a faulty gene
  2. B
    is caught by infection during life, not inherited
  3. C
    appears only in old age as immunity weakens
  4. D
    is caused by a lack of a vitamin in the diet
Show answer

Answer: B. AIDS follows infection with HIV picked up during a person's life; it is not an inherited immune deficiency. Even a baby who catches HIV from its mother has acquired it by infection.

2. Three similar plants are grown for two weeks under red, blue and green light of the same intensity. The plant under green light grows least because

  1. A
    chlorophyll reflects or transmits most green light, so little is absorbed
  2. B
    green light carries too much energy and damages the chlorophyll
  3. C
    chlorophyll absorbs green light strongly but cannot use it in photolysis
  4. D
    green light is absorbed only by carotenoids, which cannot pass energy on
Show answer

Answer: A. Only light that is absorbed can drive photosynthesis. Chlorophyll absorbs red and blue light strongly but little green; most green light is reflected or passes through the leaf, which is also why leaves look green.

3. Starch from a potato is a mixture of amylose and amylopectin. Which statement about them is correct?

  1. A
    Both are polymers of α-glucose, but only amylopectin is branched.
  2. B
    Both are polymers of α-glucose, but only amylose is branched.
  3. C
    Amylose is a polymer of β-glucose and amylopectin of α-glucose.
  4. D
    Both are branched polymers of β-glucose, like cellulose.
Show answer

Answer: A. Amylose is an unbranched chain of α-glucose units linked 1,4, which coils into a helix; amylopectin has similar chains with 1,6 branch points. β-glucose is the monomer of cellulose, not of starch.

4. Living cells can be watched under a light microscope but not under an electron microscope, mainly because

  1. A
    living cells move too fast to be seen at such a high magnification
  2. B
    the specimen must be in a vacuum, which living cells cannot survive
  3. C
    living cells are transparent to electrons and so give no image
  4. D
    the glass lenses would focus the heat of the beam onto the cells
Show answer

Answer: B. The electron beam can travel only through a vacuum, so specimens must be dried, fixed and therefore dead. Electron microscopes focus the beam with magnetic lenses, not glass ones.

5. A frog kept on a dark background slowly turns darker as pigment spreads out through the pigment cells of its skin. Which pituitary hormone brings about this change?

  1. A
    calcitonin
  2. B
    melatonin
  3. C
    prolactin
  4. D
    melanocyte-stimulating hormone (MSH)
Show answer

Answer: D. MSH from the intermediate lobe of the pituitary makes melanin granules spread through the pigment cells, so the skin darkens. Melatonin, from the pineal gland, has the opposite effect in amphibians and lightens the skin, while prolactin is a pituitary hormone that acts on milk production.

6. A human enzyme is kept at 70 °C for ten minutes and then cooled to 37 °C. Its activity at 37 °C will most likely be

  1. A
    higher than before, because heating activated it
  2. B
    very low, as heat has denatured it permanently
  3. C
    normal, because the enzyme recovers on cooling
  4. D
    normal, because 70 °C is its optimum temperature
Show answer

Answer: B. High temperature breaks the bonds holding the enzyme's three-dimensional shape, so the active site is lost; for most enzymes this denaturation is irreversible and activity does not return on cooling. Most human enzymes work best near 37 °C.

7. Charles Darwin published 'On the Origin of Species', setting out his theory of evolution by natural selection, in

  1. A
    1809
  2. B
    1859
  3. C
    1865
  4. D
    1900
Show answer

Answer: B. The Origin of Species appeared in 1859. 1809 is the year of Lamarck's 'Philosophie Zoologique' (and of Darwin's birth), 1865 the year Mendel presented his work, and 1900 the year Mendel's work was rediscovered.

8. The umbilical cord joins the foetus to the placenta. Which statement about the blood vessels in the cord is correct?

  1. A
    two veins carry deoxygenated blood to the placenta; one artery carries oxygenated blood to the foetus
  2. B
    two arteries carry oxygenated blood to the foetus; one vein carries deoxygenated blood to the placenta
  3. C
    two arteries carry deoxygenated blood to the placenta; one vein carries oxygenated blood to the foetus
  4. D
    one artery and one vein carry the mother's blood into and out of the foetus
Show answer

Answer: C. The foetal heart pumps deoxygenated blood to the placenta along the two umbilical arteries, and the single umbilical vein brings back blood that has been oxygenated in the placenta. Names follow the direction relative to the heart, not the oxygen content, and maternal and foetal blood do not mix.

9. The synovial fluid inside a freely movable joint mainly

  1. A
    lubricates the joint, reducing friction between the cartilages
  2. B
    binds the bones of the joint tightly together, as a ligament does
  3. C
    lays down new bone at the ends of the two articulating bones
  4. D
    attaches the tendons of the muscles firmly to the bones
Show answer

Answer: A. Synovial fluid, secreted by the synovial membrane, lubricates and nourishes the articular cartilages. Ligaments hold the bones together and tendons attach muscles to bones.

10. In a certain squash, a dominant allele W of one gene gives white fruit whatever the alleles of a second, unlinked gene. Plants that are ww are yellow if they carry a dominant Y allele and green if they are yy. What fraction of the offspring of WwYy × WwYy is expected to be white?

  1. A
    3/4
  2. B
    1/4
  3. C
    9/16
  4. D
    15/16
Show answer

Answer: A. Any plant with at least one W allele is white, and W_ makes up 3/4 of the offspring (12/16); the ww plants are yellow (3/16) or green (1/16). This is epistasis: the W gene hides the effect of the Y gene. The fraction 9/16 counts only W_Y_ plants.

11. The largest white blood cells, which leave the blood and become macrophages in the tissues, are the

  1. A
    neutrophils
  2. B
    lymphocytes
  3. C
    monocytes
  4. D
    basophils
Show answer

Answer: C. Monocytes are the largest leucocytes, with a kidney-shaped nucleus; in the tissues they become macrophages that engulf microbes and debris. Neutrophils are the most numerous phagocytes but are smaller.

12. A virus infects some cells of the nasal lining. Within hours, neighbouring uninfected cells become resistant to this and other viruses, long before any antibodies are made. This is due to

  1. A
    histamine released by the mast cells
  2. B
    antibodies made by the plasma cells
  3. C
    interferon released by the infected cells
  4. D
    memory cells formed in the lymph nodes
Show answer

Answer: C. Interferon is a non-specific protein released by virus-infected cells; it helps nearby cells resist viral multiplication. Antibodies and memory cells take days to appear and act against one particular virus only.

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Ways to practise 5 ways

When you get a question wrong, a short note called "The idea behind this" explains the topic it belongs to, with the rules to remember and a worked example.

All MDCAT full mock (all subjects) rules on one page

MDCAT full mock (all subjects): frequently asked questions

Is this MDCAT full mock (all subjects) test free?

Yes. Every test, answer and explanation is free, and you do not need an account. Sign in only if you want your results kept across devices.

How many MDCAT full mock (all subjects) questions are there?

2053 MCQs with answers, covering 60 chapters of the syllabus. Each test draws new questions, so you can practise many times.

How much of the full MDCAT does this cover?

The real MDCAT is 180 MCQs in 3 hours; this mock uses the same split and time. Our MDCAT full mock (all subjects) test covers every unit of the syllabus.

Are these MDCAT full mock (all subjects) past paper questions?

No. The 2053 MCQs are our own, written to the syllabus in the style of the exam.

How is the test marked?

Instantly. You see your score, the right answer and an explanation for every question, and the topics to work on next. Questions you got wrong are saved so you can retry them.

Can I practise one chapter or only my weak topics?

Yes. Pick a chapter, build your own test from chosen topics, or practise your weakest topics and your past mistakes.

Is there a full-length mock test?

Yes: 180 MCQs in the PMDC split, timed for 3 hours, plus a 90-question half mock.

Does it work on a phone?

Yes. It runs in the browser on any phone or computer, and you can add it to your home screen like an app.

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