GAT-B 2021 Question Paper with Keys & Explanations PDF Download | helpBIOTECH Academy
Explore GAT-B 2021 resources at helpBIOTECH Academy! The Graduate Aptitude Test - Biotechnology (GAT-B) 2021, conducted by the Regional Centre for Biotechnology (RCB) on behalf of DBT, occurred on September 3, 2021. This CBT exam qualified candidates for DBT-supported PG programs in Biotechnology. Around 7,000+ aspirants took it, with results in late September 2021.
Pattern: Section A (60 MCQs, 1 mark each, 10+2 level basics; -0.5 negative) and Section B (100 MCQs graduate biotech, attempt 60, 3 marks each; -1 negative). Total: 240 marks.
Here's the detailed analysis of topic-wise questions and marks from the actual GAT-B 2021 Biotechnology paper (conducted on September 3, 2021). This breakdown covers Section A (10+2 level basics, 1 mark each) and Section B (graduate-level biotech concepts, 3 marks each). High-weightage units include Molecular Biology, Biochemistry, Genetics, Immunology, and Recombinant DNA Technology — focus on these for upcoming exams like GAT-B 2026!
GAT-B 2021 - Unit-Wise Question & Marks Distribution (Analysis from PDF)
GAT-B 2021 was moderate, with Section A conceptual (e.g., colligative properties, Heisenberg) and Section B application-focused (e.g., viruses, immunology, cloning). Good attempts: 50+ in A, 50+ in B for 150+ marks.
| S.No | Unit / Topic | Section A Questions (1 mark each) | Section B Questions (3 marks each, attempted 60/100) | Total Marks (Approx.) |
|---|---|---|---|---|
| 1 | Physics (Mechanics, Optics, Electricity) | 12-15 | 0 | 12-15 |
| 2 | Chemistry (Organics, Kinetics, Thermodynamics) | 15-18 | 0 | 15-18 |
| 3 | Mathematics / Aptitude (Algebra, Probability) | 12-15 | 0 | 12-15 |
| 4 | Biology Basics (10+2 Level) | 12-15 | 0 | 12-15 |
| 5 | Biochemistry (Enzymes, Proteins, Metabolism) | 0 | 16-20 | 48-60 |
| 6 | Molecular Biology (Replication, Transcription) | 0 | 18-22 | 54-66 |
| 7 | Genetics & Evolution | 0 | 8-12 | 24-36 |
| 8 | Immunology | 0 | 8-12 | 24-36 |
| 9 | Recombinant DNA Technology & Techniques | 0 | 13-17 | 39-51 |
| 10 | Cell Biology & Microbiology | 0 | 8-12 | 24-36 |
| 11 | Plant & Animal Biotechnology | 0 | 4-6 | 12-18 |
| 12 | Bioinformatics & Bioprocess | 0 | 6-8 | 18-24 |
Key Insights from GAT-B 2021 Paper:
- Overall Difficulty: Moderate (Section A: Easy-Conceptual; Section B: Moderate-Analytical on viruses, cloning, proteins).
- High-Weightage: Molecular Biology (~60 marks) on replication, lac operon; Biochemistry (~54 marks) on enzymes, peptides; rDNA (~45 marks) on vectors, nucleases.
- Trends vs. Later Years: Similar to 2022's rDNA focus but less techniques-heavy; 2024 had more balanced bioinformatics.
- Cutoff (2021): General ~110-120 marks, OBC ~100-110, SC/ST ~60-80 (official via RCB).
- Tip: Focus on Lehninger for Biochemistry, Watson for Mol Bio. Practice 2021-2024 papers for GAT-B 2026!