GAT B Biology sample papers cover Section B's pool of 100 life-sciences questions - you attempt any 60, each carrying 3 marks, so topic selection directly determines your ceiling. Download the last 5 years GAT B question papers with answer keys below, then check the topic-wise weightage table to find which chapters give the fastest return.
Official website: dbt.nta.ac.in
- GAT B 2026 exam date: May 17, 2026 | Mode: Computer-based test, 3 hours
- Total questions: 160 | Section A: 60 compulsory | Section B: 100, attempt any 60
- Marking - Section A: +1 correct, -0.5 wrong | Section B: +3 correct, -1 wrong
- Maximum marks: 240 (Section A: 60 marks, Section B: 180 marks)
- PYQs with answer keys available from 2021 to 2025 on the official site
- GAT B qualifies students for DBT-supported MSc Biotechnology programs at RCB, JNU, and partner institutes
GAT B Biology Sample Papers 2026 - Download PDF
| Sample Paper | PDF Download |
|---|---|
| GAT B Biology Sample Paper 1 | Download PDF |
| GAT B Biology Sample Paper 2 | Download PDF |
| GAT B Biology Sample Paper 3 | Download PDF |
| GAT B Biology Sample Paper 4 | Download PDF |
| GAT B Biology Sample Paper 5 | Download PDF |
| GAT B Biology Sample Paper 6 | Download PDF |
| GAT B Biology Sample Paper 7 | Download PDF |
PDFs will be updated as new papers are added. Bookmark this page.
| Year | Sets Available | Solutions | Source |
|---|---|---|---|
| 2025 | Full paper with answer key | Available | Collegedunia |
| 2024 | Full paper with answer key | Available | Collegedunia |
| 2023 | Full paper with answer key | Available | Collegedunia |
| 2022 | Full paper with answer key | Available | Collegedunia |
| 2021 | Full paper with answer key | Available | Collegedunia |
Start with 2025 and 2024 papers - these match the current NTA question style most closely.
GAT B Exam Pattern and Marks Distribution 2026
Section A: 60 compulsory questions at 10+2 level. Section B: 100 graduation-level life-sciences questions, attempt any 60, at 3 marks each.
| Section | Total Questions | To Attempt | Marks Each | Negative Marking |
|---|---|---|---|---|
| Section A (10+2 level) | 60 | 60 (all compulsory) | +1 | -0.5 |
| Section B (Graduation level) | 100 | 60 (any 60) | +3 | -1 |
GAT B Biology Papers from 2021 to 2025 - Why the Last 3 Years Matter Most
NTA shifted from recall to application-based questions in 2022. Topics like CRISPR, single-cell sequencing, and mRNA technology appear from 2023 onward but are absent in 2021 papers - so start with 2025 and 2024 to calibrate against the current style, and treat 2021 as a concept check only.
GAT B Biology Topic Wise Weightage - High Scoring Topics to Focus in Sample Papers
Section B draws from 10 major biology and biotechnology topics. Molecular Biology and Genetics carries the highest weight and rewards students who prepare from standard textbooks.
| Topic | Questions (approx) | Difficulty | What to Watch For |
|---|---|---|---|
| Molecular Biology and Genetics | 16-18 | Hard | DNA replication, gene regulation, RNA processing |
| Biochemistry | 13-15 | Moderate-Hard | Enzyme kinetics (Km, Vmax), metabolic pathways |
| Cell Biology | 10-12 | Moderate | Cell signaling, cell cycle checkpoints |
| Recombinant DNA Technology | 8-10 | Hard | PCR variants, CRISPR-Cas9, next-gen sequencing |
| Microbiology | 8-10 | Moderate | Bacterial genetics, phage life cycles, plasmid biology |
| Immunology | 6-8 | Moderate-Hard | Antibody classes, MHC types, innate vs adaptive response |
| Plant Biotechnology | 4-6 | Easy-Moderate | Tissue culture, Agrobacterium transformation, somatic hybrids |
| Animal Biotechnology | 4-6 | Moderate | Monoclonal antibody production, stem cell types |
| Bioprocess Engineering | 4-5 | Moderate-Hard | Bioreactor types, fermentation kinetics, downstream processing |
| Bioinformatics | 4-5 | Moderate | BLAST, GenBank, PDB, phylogenetic trees |
| Environmental Biotechnology | 2-4 | Easy | Bioremediation, biosensors, biodegradation |
| Section A Biology (10+2) | 15 | Easy-Moderate | Mendelian genetics, human physiology, photosynthesis |
Do not skip Environmental Biotechnology and Plant Biotechnology. Both are Easy to Easy-Moderate with 4-6 questions each - among the fastest marks in Section B.
GAT B Biology Sample Paper Video Solutions 2026 - Watch Before You Start Solving
Watching one walkthrough before solving on your own shows you which Section B topics are highest priority and how exam-level questions are framed - not just the answers.
Watch: GAT B Most Important Topics 2026: Biology Bombshell! | IFAS
Channel: IFAS | Focus: GAT B 2026 Biology topic weightage and high-priority areas for Section A and B
How to Use GAT B Biology Sample Papers to Clear in First Attempt
What you do with wrong answers separates students who plateau from those who improve each paper.
- First paper: untimed. Solve 2025 with no clock. Mark every question you could not start within 45 seconds and note its topic.
- Build a wrong-answer log. For each wrong answer, write the topic, the gap (recall vs concept), and the correct mechanism in one line.
- Track Section B selection rate. Count how many of your 60 attempts came from your strongest topics and improve that number each paper.
GAT B Section B Question Selection Strategy - The Skill That Separates Good Scores from Great Ones
A pre-mapped selection plan beats random picking every time.
- Before exam day: rank Section B topics by accuracy from your sample papers. Your bottom 3 topics should rarely enter your 60.
- First pass (20 min): flag every question you can answer immediately - these are your core 40-45 attempts.
- Second pass: fill to 60 with questions where you know the mechanism even if the exact data is unfamiliar.
GAT B Biology 4 Week Preparation Plan Using Sample Papers
- Week 1 - Solve 2025 untimed. Map which Section B topics your 60 attempts came from and your accuracy per topic.
- Week 2 - Focus on your bottom 3 topics from Week 1. Solve 2024 timed (3 hours) and check whether selection improved.
- Week 3 - Solve 2023 and 2022 on consecutive days. Track Section A separately - aim for 50 out of 60 correct.
- Week 4 - One full paper daily under exam conditions. Stop new papers 2 days before exam and review your wrong-answer log only.
FAQs on GAT B Biology Sample Papers 2026
Ques. How many GAT B sample papers are enough to clear in the first attempt?
Ans. Five to seven full papers with proper review is enough. Solve all 5 PYQs plus 2 practice papers and maintain an error log after each one.
Ques. Are GAT B Biology questions repeated from previous year papers?
Ans. Direct repeats are rare, but the same mechanisms appear in different formats. Students who solve PYQs regularly recognise 20 to 25 percent of concepts in familiar form.
Ques. Which Section B topic should I start with for GAT B 2026?
Ans. Molecular Biology and Genetics - 16 to 18 questions and it overlaps with Recombinant DNA Technology and Cell Biology, so one preparation block covers three major topics.
Ques. Where can I download GAT B question papers with answer keys for free?
Ans. The official NTA website dbt.nta.ac.in hosts previous year papers and answer keys. Collegedunia also lists year-wise papers on the GAT B question papers page.
Ques. Can I clear GAT B in 30 days using only sample papers?
Ans. Yes, if your biology base is strong. Use week 1 to find weak topics, then split the remaining time 60-40 between concept revision and full papers. Section A is easy marks - do not lose them.
Ques. Is NCERT Biology enough for GAT B Section A?
Ans. Yes for Section A. For Section B, use Lehninger for Biochemistry, Lewin for Molecular Biology, and Kuby for Immunology - the three most-used texts by GAT B toppers.
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