Free Immunology practice for NEET PG and INI-CET Microbiology, with a written explanation on every question.
9 questions · Free explanations
Showing 1–9 of 9 questions
Q1 · Mucosal Antibody
NEET PGEasyExplanation
Secretory IgA is the predominant antibody in mucosal secretions, providing local defence at mucosal surfaces. IgG is the main serum antibody and the only one crossing the placenta.
Q2 · Placental Transfer
NEET PGMediumExplanation
IgG is the only immunoglobulin that crosses the placenta, giving the newborn passive immunity in early life. IgM is the first antibody produced in a primary response and indicates recent infection.
Q3 · Primary Immune Response
MediumExplanation
IgM is the first antibody produced in a primary response, and its presence indicates recent or acute infection. It is a pentamer and a potent activator of complement.
Q4 · Type I Hypersensitivity
NEET PGMediumExplanation
IgE bound to mast cells and basophils mediates type I hypersensitivity, including anaphylaxis and allergy. Allergen cross-linking of IgE triggers degranulation with histamine release.
Q5 · MHC Restriction
HardExplanation
CD8 cytotoxic T cells recognise antigen on MHC class I molecules, present on all nucleated cells. CD4 helper T cells recognise antigen on MHC class II, found on professional antigen-presenting cells.
Q6 · Vaccine Types
NEET PGEasyExplanation
BCG, against tuberculosis, is a live attenuated vaccine, as are MMR, oral polio and varicella. Hepatitis B is a subunit vaccine, tetanus is a toxoid and IPV is inactivated.
Q7 · Passive Immunity
MediumExplanation
Giving preformed antibodies confers immediate but short-lived passive immunity, useful after exposure to tetanus, rabies or hepatitis B. Active immunity from vaccination is slower to develop but longer-lasting.
Q8 · Complement Deficiency
HardExplanation
Terminal complement deficiency, affecting C5 to C9 and therefore the membrane attack complex, predisposes to recurrent Neisseria infections, both meningococcal and gonococcal, because the complex is needed to lyse these organisms.
Q9 · ELISA
EasyExplanation
The enzyme-linked immunosorbent assay detects and quantifies antigens or antibodies using an enzyme-linked colour change. It is widely used for HIV screening, hormone assays and serology.
Immunology sits within Microbiology, which carries the same syllabus in both exams. This set runs to 9 questions, each tagged Easy, Medium or Hard, 2 of them at Hard, and 4 drawn from previous-year papers.
Answer first, then read the explanation even on the ones you got right — the reasoning is where Immunology marks are actually won, and it is what separates a recalled fact from a question you can solve in a new form. Once the Easy set feels comfortable, filter to Hard to find the gaps Microbiology examiners keep returning to.
FAQ
Yes. Every question and explanation in this Immunology set is free and open — no login, no form and no payment. The explanation appears the moment you answer.
Immunology sits within Microbiology, which appears in the same form in both syllabuses. Bacteria, viruses, fungi and parasites organised for fast recall, with the culture media, staining and serology facts that carry the marks.
No. No account, no password, no OTP. Answer in the browser and your answers stay on your device for the session.