What is the technique shown in the graph that demonstrates antibody-antigen interaction and response kinetics?

Surface plasmon resonance for affinity

Competitive ELISA for antibody concentration

Surface plasmon resonance for concentration

Competitive ELISA for antibody affinity

Congenital lactic acidosis is due to the defect of:

Alpha-ketoglutarate dehydrogenase

Branched chain alpha-ketoacid dehydrogenase

Molecular Biology — AIIMS PG Previous Year Questions

26 solved PYQs · 2009–2025 · Biochemistry

Solved PYQs: 26
Years covered: 2009–2025
Avg / year: ~2
Subject: Biochemistry

How many AIIMS PG questions come from Molecular Biology?

Molecular Biology has contributed 26 questions to AIIMS Postgraduate Entrance papers between 2009 and 2025 — an average of about 2 questions a year. That count is measured from EByAi’s bank of 12,215 AIIMS PG questions, not estimated from a syllabus. Every one of the 26 questions carries a written, step-by-step solution, and each is tagged to Molecular Biology within Biochemistry, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Molecular Biology questions from real AIIMS PG papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 26 Molecular Biology questions (with full written solutions) are available in practice.

Question 1 · AIIMS PG 2025
How many PCR cycles are needed to produce half the amplified DNA copies produced by 27 cycles of PCR?
1. (A) $26$
2. (B) $12$
3. (C) $25$
4. (D) $13$
Show answerAnswer
$Answer: (A) 26$
Question 2 · AIIMS PG 2025
What is the technique shown in the graph that demonstrates antibody-antigen interaction and response kinetics?
1. (A) $Surface plasmon resonance for affinity$
2. (B) $Competitive ELISA for antibody concentration$
3. (C) $Surface plasmon resonance for concentration$
4. (D) $Competitive ELISA for antibody affinity$
Show answerAnswer
$Answer: (A) Surface plasmon resonance for affinity$
Question 3 · AIIMS PG 2025
Match the following blotting techniques with the type of biomolecule they detect: Blotting Technique Detects A. Southern blot 1. RNA B. Northern blot 2. Lipids C. Western blot 3. DNA D. Eastern blot 4. Protein
1. (A) $A-3, B-1, C-4, D-2$
2. (B) $A-4, B-2, C-1, D-3$
3. (C) $A-2, B-4, C-3, D-1$
4. (D) $A-1, B-3, C-2, D-4$
Show answerAnswer
$Answer: (A) A-3, B-1, C-4, D-2$
Question 4 · AIIMS PG 2024
Congenital lactic acidosis is due to the defect of:
1. (A) $Transaldolase$
2. (B) $Pyruvate dehydrogenase$
3. (C) $Alpha-ketoglutarate dehydrogenase$
4. (D) $Branched chain alpha-ketoacid dehydrogenase$
Show answerAnswer
$Answer: (B) Pyruvate dehydrogenase$
Question 5 · AIIMS PG 2024
Which gene defect causes familial hypercholesterolemia?
1. (A) $LDL Receptor$
2. (B) $Apo E$
3. (C) $Apo CII$
4. (D) $Apo B48$
Show answerAnswer
$Answer: (A) LDL Receptor$

Molecular Biology questions by year

Year	Questions	Share of chapter questions
2025	3
2024	6
2023	3
2022	3
2021	5
2017	1
2015	1
2013	1
2012	1
2011	1
2009	1

Practise these 26 questions with solutions

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FAQs

How many AIIMS PG questions have been asked from Molecular Biology?

EByAi's bank holds 26 real AIIMS PG questions from Molecular Biology, asked between 2009 and 2025 — about 2 per year on average. Every count is measured from actual papers, not estimated.

Is Molecular Biology important for AIIMS PG?

26 questions over 11 papers make Molecular Biology a steady-weightage chapter in AIIMS PG Biochemistry. The year-wise table above shows exactly how often it appears.

Can I solve Molecular Biology PYQs online for free?

Yes. EByAi lets you solve AIIMS PG past-year questions in the browser with written solutions — free daily practice, no card needed.