Free Biology MCQs with Answers
19,844 free Biology MCQs organised chapter by chapter, each with the correct answer and a written explanation of why that answer is correct. Unlimited attempts, no fee and no account needed.
Biology is examined by 8 of the exams on TestUstad, MDCAT, ETEA MDCAT, DUHS and KMU among them, and all of them draw the same bank. A Biology fact does not change between papers, so one page prepares you for every exam that asks it.
Intermediate-level biology for MDCAT and medical entry tests.
19,844
Free MCQs
21
Chapters
65 subtopics
8
Exams testing it
up to 81 MCQs a paper
48
Papers analysed
2005 to 2025
Biology chapter-wise MCQs
All 21 chapters of Biology, with 65 subtopics beneath them, in syllabus order with the depth of the bank behind each one. Tap a chapter to practise it on its own. If you are short of time, start with Biodiversity and Variety of Life, Cell Structure and Function and Coordination and Control.
Priority is measured, not asserted: 3,289 Biology questions across 48 solved ETEA MDCAT, MDCAT and NUMS papers from 2005 to 2025 were counted and attributed to the chapter they came from. The share column is that count.
| Chapter | MCQs | Share of papers | Priority |
|---|---|---|---|
| 1. Acellular Life Viruses, AIDS and HIV Infection | 342 | 2% | Standard |
| 2. Bioenergetics Cellular Respiration | 1,378 | 4% | Standard |
| 3. Biological Molecules Carbohydrates, Proteins, Ribonucleic Acid (RNA) and 5 more | 1,790 | 8% | Critical |
| 4. Cell Structure and Function Chromosomes, Cytoplasmic Organelles, Animal and Plant Cell and 1 more | 2,478 | 11% | Critical |
| 5. Coordination and Control Chemical Coordination and Hormones, Brain, Neurons and Nerve Impulse and 2 more | 1,687 | 9% | Critical |
| 6. Enzymes Characteristics of Enzymes, Factors Affecting Enzyme Action, Enzyme Inhibitors and 1 more | 633 | 3% | Standard |
| 7. Evolution Concept of Evolution, Darwinism, Lamarckism | 814 | 3% | Standard |
| 8. Reproduction Human Reproductive System, Menstrual Cycle, Sexually Transmitted Diseases | 1,220 | 4% | Important |
| 9. Support and Movement Human Skeleton, Muscles, Muscle Contraction and 2 more | 738 | 5% | Important |
| 10. Inheritance Mendel's Laws of Inheritance, X-linked Recessive Inheritance, Gene Linkage and Crossing Over | 1,238 | 5% | Important |
| 11. Circulation Blood Vessels, Human Heart, Lymphatic System and 1 more | 695 | 5% | Important |
| 12. Immunity Specific Defense Mechanism | 139 | 2% | Standard |
| 13. Respiration Human Respiratory System, Gaseous Exchange in Lungs, Effects of Smoking | 446 | 2% | Standard |
| 14. Digestion Human Digestive System | 680 | 4% | Important |
| 15. Homeostasis Kidney and Urinary System, Excretion, Thermoregulation | 698 | 4% | Important |
| 16. Biotechnology Biotechnology and Health Care | 731 | 3% | Standard |
| 17. Introduction to Biology Major Fields of Specialization, Levels of Biological Organization | 123 | <1% | Standard |
| 18. Biodiversity and Variety of Life Kingdom Animalia, Kingdom Prokaryotae, Kingdom Plantae and 3 more | 3,130 | 16% | Critical |
| 19. Forms and Functions of Plants Plant Nutrition and Transport, Plant Growth Regulators | 272 | 4% | Important |
| 20. Growth and Development Embryonic Development, Regeneration and Ageing | 230 | 2% | Standard |
| 21. Man and His Environment Ecosystems, Pollution and Conservation | 382 | 2% | Standard |
Exams that test Biology
Every exam on TestUstad that examines Biology, and how much of each paper it is worth. The weightage is what decides how much of your preparation Biology deserves: at 81 of 180 MCQs it is 45% of the MDCAT paper on its own.
Biology in entry tests
| Exam | Biology MCQs | Share of paper |
|---|---|---|
| MDCAT Biology MCQs Medical and Dental College Admission Test. Conducted by Pakistan Medical and Dental Council. | 81 | 45% |
| ETEA MDCAT Biology MCQs ETEA MDCAT (Khyber Pakhtunkhwa). Conducted by Educational Testing and Evaluation Agency, Khyber Pakhtunkhwa. | 81 | 45% |
| DUHS Biology MCQs DUHS Entry Test. Conducted by Dow University of Health Sciences. | 81 | 45% |
| KMU Biology MCQs KMU Entry Test. Conducted by Khyber Medical University. | 81 | 45% |
| NUMS Biology MCQs NUMS MDCAT. Conducted by National University of Medical Sciences. | 55 | 37% |
| BSN Entry Test Biology MCQs BSN Nursing Entry Test. Conducted by Nursing Colleges and Universities. | 40 | 40% |
Biology in government job tests
| Exam | Biology MCQs | Share of paper |
|---|---|---|
| Lecturer Biology Test Biology MCQs Lecturer Biology Test. Conducted by Public Service Commissions. | 80 | 80% |
| Subject Specialist Biology Test Biology MCQs Subject Specialist Biology Test. Conducted by Public Service Commissions. | 80 | 80% |
How to prepare Biology for your test
Work one chapter at a time, not the whole subject. Reading Biology end to end feels productive and is the slowest way to raise a score. Pick a single chapter, solve its MCQs until you are consistently above 80 percent, and only then move on. There are 21 to get through.
Read the explanation on every question you get wrong. This is the whole reason to practise online rather than from an answer key. A wrong answer is only useful if it tells you which fact you were missing, so every Biology MCQ here carries a written explanation and no question can be published without one.
Start where the marks are. Across the papers we have counted, Biodiversity and Variety of Life, Cell Structure and Function and Coordination and Control carry the most Biology questions. A weak chapter near the top of the table above costs you more marks than a weak one near the bottom, so the order you revise in matters as much as the hours you put in.
Finish with mixed, timed practice. Recalling a fact under the clock is a different skill from recognising it while you revise, and it is the one the paper actually tests. Once several chapters feel solid, sit a timed test that mixes them rather than practising one chapter at a time.
What is in the Biology question bank
19,844 published Biology MCQs, every one of them carrying the correct answer and a written explanation. 2,269 of them are tagged with the year of the real paper they came from; the rest are written to the same syllabus and the same style.
Biology preparation by exam
Each exam hub adds the things that are true of that paper alone: its pattern, its subject weightage, its solved past papers and a study plan built around its date.
Biology MCQs: frequently asked questions
Are these Biology MCQs free?
Yes. Every Biology MCQ on TestUstad is free to read and practise, with unlimited attempts, no daily limit and no account required. There is no trial that expires and no paywall on the question bank. Only full-length mock tests and long-term progress tracking are paid.
Do the Biology MCQs come with answers and explanations?
Yes. Every Biology question shows the correct answer and a written explanation of why that option is correct, not just an answer key letter. A question cannot be published on TestUstad without an explanation.
How many Biology MCQs are there?
There are 19,844 published Biology MCQs on TestUstad, organised across 21 chapters. All of them are free, and new questions are added regularly.
Are the Biology MCQs chapter-wise?
Yes. The Biology MCQs are split into 21 chapters and 65 subtopics beneath them so you can practise one chapter at a time instead of working through the whole subject. You can also practise every Biology question together from the "All MCQs" page.
Which exams do these Biology MCQs help with?
The same Biology bank is used for every exam that tests Biology, including MDCAT, ETEA MDCAT, DUHS, KMU, Lecturer Biology Test, Subject Specialist Biology Test. A Biology question does not change between exams, so practising here prepares you for all of them at once.
Are these Biology MCQs only for MDCAT?
No. MDCAT is the paper that carries the most Biology, at 81 of its 180 MCQs, but the same Biology bank is drawn by every other exam that examines the subject, including ETEA MDCAT, DUHS, KMU, Lecturer Biology Test, Subject Specialist Biology Test. Nothing here is written for one paper: a Biology fact is the same fact whichever exam asks it, so you can prepare for all of them from this one page.
Which Biology chapters are most important?
Across the 48 solved Biology papers on TestUstad, covering 2005 to 2025, the chapters asked about most are Biodiversity and Variety of Life, Cell Structure and Function, Coordination and Control, Biological Molecules, Inheritance. Each chapter on this page shows the share of past-paper questions it accounted for, so you can see the ranking rather than take our word for it.
Are these Biology MCQs from past papers?
2,269 Biology MCQs on TestUstad carry the year of the real paper they came from, and the rest are written to the same syllabus and the same style. Every one of them is solved online with the correct answer and an explanation instead of being handed to you as a PDF, so the paper is something you sit rather than something you read.
How should I prepare Biology for a test?
Work one chapter at a time rather than reading the whole subject end to end. Solve that chapter's MCQs until you are consistently above 80 percent, read the explanation on every question you get wrong, and move on only then. There are 21 Biology chapters to get through. Once several chapters feel solid, sit a timed test that mixes them, because recalling a fact under the clock is a different skill from recognising it while you revise.
Do I need to sign up to practise Biology MCQs?
No. You can practise Biology MCQs on TestUstad without creating an account, without giving an email address and without a card. An account only saves your history and progress across sessions.