Free Microbiology MCQs with Answers
452 free Microbiology MCQs organised topic by topic, each with the correct answer and a written explanation of why that answer is correct. Unlimited attempts, no fee and no account needed.
Microbiology is examined by 6 of the exams on TestUstad, NLE, PLAB 1, AMC MCQ and USMLE Step 1 among them, and all of them draw the same bank. A Microbiology fact does not change between papers, so one page prepares you for every exam that asks it.
Bacteriology, virology, parasitology and immunology at MBBS level, with infection control.
452
Free MCQs
7
Topics
6
Exams testing it
up to 15 MCQs a paper
452
With explanations
Microbiology topic-wise MCQs
All 7 topics of Microbiology, in syllabus order with the depth of the bank behind each one. Tap a topic to practise it on its own. If you are short of time, start with Bacteriology, Immunology and Virology.
No solved Microbiology papers have been counted yet, so the share column is each topic's share of the Microbiology bank rather than of a real paper. It tells you where the practice material is deepest, which is not the same as where the marks are.
| Topic | MCQs | Share of bank | Priority |
|---|---|---|---|
| General Microbiology | 14 | 3% | Standard |
| Bacteriology | 167 | 37% | Critical |
| Virology | 83 | 18% | Important |
| Mycology | 27 | 6% | Standard |
| Parasitology | 33 | 7% | Standard |
| Immunology | 90 | 20% | Critical |
| Infection Control and Sterilisation | 38 | 8% | Standard |
Exams that test Microbiology
Every exam on TestUstad that examines Microbiology, and how much of each paper it is worth. The weightage is what decides how much of your preparation Microbiology deserves: at 15 of 100 MCQs it is 15% of the NLE paper on its own.
Microbiology in government job tests
| Exam | Microbiology MCQs | Share of paper |
|---|---|---|
| MO Microbiology MCQs Medical Officer Test. Conducted by Public Service Commissions. | 11 | 11% |
Microbiology in licensing exams
| Exam | Microbiology MCQs | Share of paper |
|---|---|---|
| NLE Microbiology MCQs National Licensing Examination. Conducted by Pakistan Medical and Dental Council. | 15 | 15% |
| PLAB 1 Microbiology MCQs PLAB 1. Conducted by General Medical Council (UK). | 15 | 15% |
| AMC MCQ Microbiology MCQs AMC CAT MCQ Examination. Conducted by Australian Medical Council. | 15 | 15% |
| USMLE Step 1 Microbiology MCQs USMLE Step 1. Conducted by NBME / FSMB (ECFMG for international graduates). | 13 | 13% |
| FCPS Part 1 Microbiology MCQs FCPS Part 1. Conducted by College of Physicians and Surgeons Pakistan. | 10 | 10% |
How to prepare Microbiology for your test
Work one topic at a time, not the whole subject. Reading Microbiology end to end feels productive and is the slowest way to raise a score. Pick a single topic, solve its MCQs until you are consistently above 80 percent, and only then move on. There are 7 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 Microbiology MCQ here carries a written explanation and no question can be published without one.
Start where the marks are. Bacteriology, Immunology and Virology carry the most Microbiology material in the bank. A weak topic 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 topics feel solid, sit a timed test that mixes them rather than practising one topic at a time.
What is in the Microbiology question bank
452 published Microbiology MCQs, every one of them carrying the correct answer and a written explanation. 1 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.
Microbiology 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.
Microbiology MCQs: frequently asked questions
Are these Microbiology MCQs free?
Yes. Every Microbiology 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 Microbiology MCQs come with answers and explanations?
Yes. Every Microbiology 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 Microbiology MCQs are there?
There are 452 published Microbiology MCQs on TestUstad, organised across 7 chapters. All of them are free, and new questions are added regularly.
Are the Microbiology MCQs chapter-wise?
Yes. The Microbiology MCQs are split into 7 chapters so you can practise one chapter at a time instead of working through the whole subject. You can also practise every Microbiology question together from the "All MCQs" page.
Which exams do these Microbiology MCQs help with?
The same Microbiology bank is used for every exam that tests Microbiology, including NLE, PLAB 1, AMC MCQ, USMLE Step 1, MO, FCPS Part 1. A Microbiology question does not change between exams, so practising here prepares you for all of them at once.
Are these Microbiology MCQs only for NLE?
No. NLE is the paper that carries the most Microbiology, at 15 of its 100 MCQs, but the same Microbiology bank is drawn by every other exam that examines the subject, including PLAB 1, AMC MCQ, USMLE Step 1, MO, FCPS Part 1. Nothing here is written for one paper: a Microbiology fact is the same fact whichever exam asks it, so you can prepare for all of them from this one page.
Which Microbiology chapters are most important?
Bacteriology, Immunology, Virology, Infection Control and Sterilisation, Parasitology carry the most Microbiology questions in the TestUstad bank. No solved Microbiology papers have been counted yet, so treat that as a guide to where the practice material is deepest rather than as a measured paper ranking.
Are these Microbiology MCQs from past papers?
1 Microbiology 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 Microbiology 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 7 Microbiology 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 Microbiology MCQs?
No. You can practise Microbiology 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.