GATE Biotechnology 2027
The revised syllabus, exact paper pattern, eligibility, official cutoffs, admission routes, previous papers and a preparation strategy built for the Biology-engineering mix.
WRITTEN BYShabab Anwar and Sabiha ParveenGATE 2027 registration has closed
IIT Madras is organising GATE 2027. Registration closed on 16 October 2026. If scrutiny marked defects in your application, fix them on GOAPS by 30 November 2026. A separate paid window to change application details will be announced. The BT syllabus now has six numbered sections instead of seven, and Engineering Mathematics adds vector calculus and Bayesian statistics.
What is GATE Biotechnology (BT)?
It tests a blend of core biology, engineering mathematics, bioprocess technology, and general analytical aptitude.
| Field | Official Specification |
|---|---|
| Examination | Graduate Aptitude Test in Engineering 2027 |
| Paper | Biotechnology (BT) |
| Organising institute | Indian Institute of Technology Madras |
| Mode | Computer-Based Test |
| Language | English |
| Duration | 3 hours |
| Questions | 65 |
| Maximum marks | 100 |
| Question types | MCQ, MSQ and NAT |
| Score validity | 3 years from the result announcement date |
Who should consider BT?
BT can suit candidates who are prepared to cover both life-science concepts and the compulsory mathematical, quantitative and bioprocess parts of the paper. Compare the complete BT and XL syllabi, then check the accepted GATE paper and qualifying degree for every programme you may apply to. A BTech, BSc or MSc label alone does not decide the right paper.
Compact BT versus XL comparison
| Decision point | GATE BT | GATE XL |
|---|---|---|
| Paper structure | GA + compulsory Engineering Mathematics + one fixed BT syllabus | GA + compulsory Chemistry + any two life-science sections |
| Breadth | Molecular and cellular biology, biotechnology, biological engineering and tools | Chemistry plus two selected life-science subjects |
| What to verify | Mathematics and bioprocess readiness, accepted paper and degree rules | Chemistry readiness, optional-section fit, accepted paper and degree rules |
Do not label either paper universally easier or tie either one to a degree title as a rule.
Who can appear for GATE 2027?
You may appear for GATE 2027 if you are currently in the third year or higher of any government-approved undergraduate degree, or if you have completed a government-approved degree in Engineering, Technology, Architecture, Science, Commerce, Arts or Humanities.
Candidates pursuing or holding a higher degree are also allowed. Candidates studying outside India must be in the third year or higher, or have completed a bachelor's degree of at least three years in one of the listed fields.
| Question | Official exam rule |
|---|---|
| Minimum marks to sit GATE | The GATE 2027 eligibility page does not prescribe a minimum percentage for appearing. |
| Age limit | None |
| Attempt limit | None |
| Third-year undergraduate eligibility | Eligible to appear |
| Paper choice | Up to two papers from an allowed combination |
Important eligibility note
Eligibility to write GATE does not establish eligibility for every MSc, MTech or PhD programme. Institutes can specify accepted GATE papers, qualifying degrees, minimum marks, categories, tests, interviews and funding rules. Check the current programme notice before building an admission plan around BT.
GATE BT 2027 paper pattern
| Component | Status / Questions | Marks |
|---|---|---|
| General Aptitude (GA) | 10 questions · Compulsory | 15 |
| Engineering Mathematics | Compulsory BT component | 13 |
| Remaining Biotechnology syllabus | Compulsory BT component | 72 |
| Total | 65 questions | 100 |
The official pattern fixes the total questions and marks, but does not publish a guaranteed advance split of MCQ, MSQ and NAT questions. Do not predict that mix or attach fixed marks to individual syllabus units.
Question types and marking
| Type | Answer rule | Negative marking |
|---|---|---|
| Multiple Choice Questions (MCQ) | Select one option | A wrong 1-mark answer loses 1/3 mark. A wrong 2-mark answer loses 2/3 mark. |
| Multiple Select Questions (MSQ) | Select one or more correct options | No negative marking and no partial marking |
| Numerical Answer Type (NAT) | Enter a numerical answer using the on-screen keypad | No negative marking |
Questions carry either 1 or 2 marks. There is no negative marking for an unanswered question.
Exam interface note: A virtual scientific calculator is available on screen. Physical calculators are prohibited. A candidate receives one scribble pad at a time and must return it before receiving another.
Complete GATE Biotechnology 2027 syllabus
The revised BT syllabus has six numbered subject sections. General Aptitude is common to every GATE paper and appears separately below. All section names and topics follow the official 2027 IIT Madras PDFs.
GATE BT 2027 syllabus PDF
General Aptitude and all six Biotechnology sections, word for word from IIT Madras, with tick boxes. Free, no sign-up.
Linear Algebra
- •Matrices and determinants.
- •Systems of linear equations.
- •Eigenvalues and eigenvectors.
Calculus
- •Functions of single and multiple variables.
- •Limits, continuity and differentiability.
- •Partial derivatives, maxima and minima.
- •Sequences and series, and tests for convergence.
- •Gradient, divergence and curl, including applications to fluid flow and transport processes.
Differential Equations
- •Linear and nonlinear first-order ordinary differential equations.
- •Higher-order linear ordinary differential equations with constant coefficients.
- •Cauchy and Euler equations.
- •Laplace transforms.
Probability and Statistics
- •Mean, median, mode and standard deviation.
- •Random variables.
- •Poisson, normal and binomial distributions.
- •Correlation and regression analysis.
- •Bayesian statistics.
Numerical Methods
- •Numerical solutions of linear and nonlinear algebraic equations.
- •Trapezoidal and Simpson rules for integration.
- •Single-step methods for differential equations.
Biochemistry
- •Structure and functions of biomolecules.
- •Biological membranes, membrane channels and pumps, molecular motors, action potentials and transport processes.
- •Metabolism of carbohydrates, lipids, amino acids and nucleic acids, including regulation.
- •Glycolysis, the TCA cycle and fatty-acid oxidation.
- •Photosynthesis, respiration and electron transport chains.
- •Enzyme classification, catalysis and regulation.
- •Michaelis-Menten kinetics.
- •Competitive, noncompetitive and uncompetitive inhibition.
Microbiology
- •Historical perspective of microbiology.
- •Classification and diversity of bacteria.
- •Bacterial cell walls, Gram-positive and Gram-negative bacteria, and Archaea.
- •Microbiological methods.
- •Microbial growth and nutrition.
- •lac, trp and ara operons.
- •Biological nitrogen fixation.
- •Microbial diseases and host-pathogen interactions.
- •Antibiotics and antibiotic resistance.
- •Two-component regulatory systems and bacterial communication.
- •Virus structure and classification.
Immunology
- •Primary and secondary lymphoid organs.
- •Innate immunity and inflammation.
- •Cytokines and chemokines.
- •Complement system.
- •Cellular and humoral effector responses.
- •Antibody structure, function and diversity.
- •Polyclonal and monoclonal antibodies.
- •T-cell and B-cell development.
- •Immunological memory.
- •Major histocompatibility complex.
- •Antigen processing and presentation.
- •Immune regulation and tolerance.
- •Hypersensitivity.
- •Autoimmunity and immunodeficiency.
- •Graft-versus-host response.
- •Immunisation and vaccines.
Genetics and Evolutionary Biology
- •Mendelian inheritance.
- •Gene interactions and complementation.
- •Linkage, recombination and genetic mapping.
- •Extrachromosomal inheritance.
- •Transformation, transduction and conjugation.
- •Bacterial gene mapping.
- •Horizontal gene transfer and transposable elements.
- •Chromosomal variations.
- •Sex determination.
- •Genetic disorders.
- •Population genetics.
- •Epigenetics.
- •Natural selection and inheritance.
- •Adaptive and neutral evolution.
- •Genetic drift and speciation.
Cell Biology
- •Structure and function of eukaryotic cells.
- •Cell cycle and control of cell growth.
- •Cell-cell communication.
- •Cell signalling and signal transduction.
- •Non-cell-autonomous signalling.
- •Post-translational modification.
- •Intracellular protein trafficking.
- •Cell death and autophagy.
- •Extracellular matrix.
Molecular Biology
- •Gene and chromosome structure.
- •Mutation and mutagenesis.
- •Regulation of gene expression.
- •DNA replication.
- •Transcription and RNA processing, including splicing.
- •Translation and its regulation.
- •Noncoding RNA and microRNA.
- •RNA interference.
- •DNA damage and repair.
Bioreaction Engineering
- •Zero-order and first-order reaction-rate laws.
- •Michaelis-Menten kinetics.
- •Competitive, noncompetitive and uncompetitive enzyme inhibition.
- •Ideal batch, mixed-flow and plug-flow reactors.
- •Enzyme immobilisation.
- •Diffusion effects, including Thiele modulus, effectiveness factor and Damkoehler number.
- •Kinetics of cell growth, substrate utilisation and product formation.
- •Structured and unstructured models.
- •Batch, fed-batch and continuous processes.
- •Microbial and enzyme reactors.
- •Optimisation and scale-up of biological processes.
- •Design and operation of large-scale antibiotic and biofuel production processes.
Upstream Processing, Downstream Processing and Process Control
- •Media formulation and optimisation.
- •Sterilisation of air and media.
- •Membrane separation and ultrafiltration.
- •High-speed centrifugation and ultracentrifugation.
- •Cell disruption.
- •Ion-exchange, gel-filtration, hydrophobic-interaction and affinity chromatography.
- •Gas chromatography, HPLC and FPLC.
- •Extraction, adsorption and drying.
- •Measurement devices and valves.
- •First-order and second-order systems.
- •Feedback and feedforward control.
- •Proportional, integral and derivative control and controller tuning.
Plant Biotechnology
- •Totipotency and cell-fate transition.
- •Direct and indirect organogenesis and regeneration.
- •Plant growth regulators and elicitors.
- •Plant tissue culture and cell-suspension culture.
- •Growth and nutritional requirements in plant culture.
- •Production of secondary metabolites.
- •Hairy-root culture.
- •Industrially useful plant products.
- •Artificial seeds.
- •Somaclonal variation.
- •Protoplast fusion, somatic hybrids and cybrids.
- •Transgenic plants.
- •Gene-transfer methods, selectable markers and reporter genes.
- •Plastid transformation.
Animal Biotechnology
- •Animal cell-culture media and growth requirements.
- •Preservation of animal cells.
- •Anchorage-dependent and anchorage-independent culture.
- •Cell-growth kinetics.
- •Microcarriers and macrocarriers.
- •Hybridoma technology.
- •Stem cells.
- •Animal cloning.
- •Transgenic animals.
- •Knock-out and knock-in animals.
Microbial Biotechnology
- •Production of microbial biomass and primary and secondary metabolites.
- •Biofuels, bioplastics, enzymes and antibiotics.
- •Large-scale production and purification of recombinant proteins and metabolites.
- •Clinical, food and industrial microbiology.
- •Screening strategies for industrially useful microorganisms.
Recombinant DNA Technology
- •Restriction and modification enzymes.
- •Plasmid, phage, viral, cosmid, Ti, BAC and YAC vectors.
- •Expression vectors.
- •cDNA and genomic libraries.
- •Isolation and cloning of genes.
- •Recombinant-protein production strategies.
- •Transposons and gene targeting.
- •Recombination-based cloning.
Molecular Tools
- •Polymerase chain reaction.
- •DNA and RNA labelling.
- •Sanger sequencing and next-generation sequencing.
- •Southern and Northern blotting.
- •In situ hybridisation.
- •DNA fingerprinting, RAPD and RFLP.
- •Site-directed mutagenesis.
- •CRISPR-Cas systems.
- •Biosensing.
- •Methods for studying DNA-protein and protein-protein interactions.
- •Genomics and proteomics approaches.
Analytical Tools
- •Light, electron, fluorescence and confocal microscopy.
- •UV-visible, fluorescence, circular dichroism, infrared and FTIR spectroscopy.
- •Mass spectrometry and NMR spectroscopy.
- •Electrophoresis.
- •Microarrays.
- •Enzymatic assays.
- •ELISA, RIA and immunohistochemistry.
- •Immunoblotting.
- •Flow cytometry.
- •Whole-genome sequencing and ChIP sequencing.
Computational Tools
- •Biological databases, resources and search tools.
- •Sequence and structure databases.
- •Sequence formats, scoring matrices, sequence alignment and phylogeny.
- •Genomics, proteomics and metabolomics.
- •Gene prediction and genome annotation.
- •Secondary-structure and three-dimensional structure prediction.
- •Knowledge discovery from biological databases.
- •Metagenomics.
- •Metabolic engineering and systems biology.
Verbal Aptitude
- •Basic English grammar, vocabulary and reading comprehension.
- •Narrative sequencing.
Quantitative Aptitude
- •Data interpretation.
- •Numerical computation and estimation.
- •Ratios, percentages, powers and logarithms.
- •Permutations and combinations.
- •Number series.
- •Geometry and mensuration.
- •Elementary probability and statistics.
Analytical Aptitude
- •Deduction and induction.
- •Analogy.
- •Numerical relations and reasoning.
Spatial Aptitude
- •Translation, rotation, scaling and mirroring.
- •Paper folding and cutting.
- •Patterns in two and three dimensions.
GATE Biotechnology previous year papers
10 papers from 2016 to 2025, each retyped from the official paper and checked question by question against the official answer key. Fill one short form once, and every paper is yours.
| Paper | Practice | |
|---|---|---|
| 2025Newest | Get the PDF | Free mock test → |
| 2024 | Get the PDF | Free mock test → |
| 2023 | Get the PDF | Free mock test → |
What a GATE BT score can be used for
A valid GATE score may support applications to eligible master's, direct doctoral and doctoral programmes, financial assistance and selected recruitment routes. It is not an admission or job guarantee. Every route has its own accepted paper, degree, category and selection rules.
1. MSc Life Sciences
IISc lists GATE BT among accepted papers for MSc Life Sciences. The current page requires a first-class or equivalent qualifying degree in specified fields. GATE score is used for interview shortlisting, and final selection is based on interview performance.
What to verify: Current eligible degrees, category rules, application dates and selection notice.
2. MTech Bioengineering
IISc lists BT among accepted GATE papers for MTech Bioengineering, while its current programme eligibility requires a BE or BTech in an engineering or technology branch.
What to verify: Degree eligibility, accepted paper, shortlist and interview process.
3. MTech in Biosciences and Bioengineering
IIT Bombay's current BSBE programme page describes a written test followed by an in-person interview.
What to verify: The current institute admission brochure controls qualifying degree, accepted GATE paper and exemption rules.
4. Participating NITs and other institutes
CCMT provides centralised counselling for participating institutes and programmes.
What to verify: The current CCMT eligibility matrix and programme list, not a general assumption that every BT programme accepts every degree.
Application systems note: An IIT application and COAP are separate steps. COAP displays offers from participating institutes; it does not replace each institute's application. CCMT is the centralised route only for its participating institutes and programmes.
Financial assistance (MHRD/MoE Fellowship Norms)
The official GATE 2027 opportunities page states that eligible full-time MTech students can generally receive ₹12,400 per month for 22 months. It also lists direct-PhD financial assistance of ₹37,000 per month for the first two years and ₹42,000 per month from the third to fifth year.
Both remain subject to institutional eligibility and conditions. These figures are not guaranteed for every admission.
Dated example: BARC OCES/DGFS 2026
Recruitment example with a necessary warning (Dated example: BARC OCES/DGFS 2026)
BARC OCES/DGFS 2026 is a useful example of why students must read the full recruitment notice. Its Biosciences route accepted GATE BT or XL for screening, but degree eligibility was narrow. Several BTech degrees with Biotechnology, Genetic Engineering and Biomedical Engineering titles were explicitly listed as ineligible for that Biosciences route, while certain MSc and integrated MSc bioscience degrees and BE or BTech Food Technology were eligible. Candidates were screened through the BARC examination or GATE and then interviewed, with final selection based on interview performance.
This serves as an illustrative example showing why candidates must verify specific degree eligibility in the current recruitment brochure, rather than assuming all biotechnology degrees are eligible.
Official GATE BT qualifying cutoffs
These are paper-level marks out of 100 needed to qualify in the cited year. They are not admission cutoffs, GATE scores out of 1000, ranks or guaranteed targets.
| Year | General | OBC-NCL / EWS | SC / ST / PwD | Registered | Appeared |
|---|---|---|---|---|---|
| 2026 | 25.8 | 23.2 | 17.2 | 26,808 | 21,513 |
| 2024 | 38.9 | 35 | 25.9 | 21,210 | 17,078 |
Verification note: Sourced directly from official GATE 2026 and GATE 2024 cutoff reports. Last verified 15 October 2026.
Qualifying marks depend on paper difficulty and candidate performance distributions; cutoff variations should not be evaluated against registration or appearance numbers alone.
Programme example, not a universal target
A programme shortlist is a different number
For the 2026-27 cycle, IISc's MSc Life Sciences interview-shortlist report lists GATE BT score cutoffs out of 1000 of 700 for UR, 600 for OBC-NCL, EWS, PH and KM, and 400 for SC and ST. This is a dated, programme-specific interview-shortlist example. It is not the GATE BT qualifying cutoff and it does not predict another institute or cycle.
GATE 2027 dates and application
Regular and extended registration have closed. Last verified 15 October 2026.
| Event | Official date |
|---|---|
| GOAPS registration opened | 2 September 2026 |
| Regular registration closes | 5 October 2026 |
| Extended registration closes | 12 October 2026 |
| Application rectification (scrutiny defects) opens | 14 October 2026 |
| Special registration window (with late fee) | 15 October 2026, 10:30 AM to 16 October 2026, 10:29 AM |
| Application rectification (scrutiny defects) closes | 30 November 2026 (extended from 21 October, 31 October and 3 November) |
| Application data correction window (candidate request, with fee) | To be announced |
| Test-city allotment | 4 January 2027 |
| Admit card | To be announced |
| GATE 2027 examinations | 6, 7, 13, 14, 20 and 21 February 2027 (forenoon and afternoon sessions; paper-wise schedule to be announced) |
| Responses and answer keys | To be announced after the exam |
| Result announcement | 19 March 2027 |
| Scorecard download | Free download date to be announced; paid download (₹500 per paper) until 31 December 2027 |
All dates are subject to official confirmation. The specific session schedule for the BT paper will be announced by IIT Madras.
Application fees
| Candidate category | One paper, regular | Two papers, regular | One paper, extended | Two papers, extended |
|---|---|---|---|---|
| Female / SC / ST / PwD | ₹1,000 | ₹2,000 | ₹1,500 | ₹2,500 |
| All other candidates, including foreign nationals | ₹2,000 | ₹4,000 | ₹2,500 | ₹4,500 |
Payment-provider charges may be additional. The official fee page is the controlling source.
Changes in the paid correction window (dates to be announced) need an extra fee, set by IIT Madras when the window opens.
Allowed second papers for BT
As currently published, a candidate selecting BT as the primary paper may choose BM, ES, EY or XL as the second paper. GATE can add or remove combinations, so check the official table before registering.
Frequently asked questions
Everything you need to know about the GATE Biotechnology paper.
The BT syllabus was revised from seven numbered sections to six. Engineering Mathematics, General Biology, Genetics and Cell and Molecular Biology, Fundamentals of Biological Engineering, Plant, Animal and Microbial Biotechnology, and Recombinant DNA Technology and Other Tools now form the six sections. Some topics were added or expanded, while the former standalone material and energy balance, classical thermodynamics and transport-process coverage is no longer listed.
The 100-mark paper contains 15 marks of General Aptitude, 13 marks of Engineering Mathematics and 72 marks from the remaining BT subject syllabus. There are 65 questions in total.
Yes, if the candidate meets the broad GATE 2027 exam eligibility. However, admission eligibility is programme-specific. A programme may require a named degree, a four-year qualification, minimum marks or another selection stage.
No. GATE 2027 has no age limit and no restriction on the number of attempts.
No. Wrong MCQs have negative marking: one-third of a mark for a 1-mark question and two-thirds for a 2-mark question. MSQ and NAT questions have no negative marking. MSQs have no partial marking.
No. The official pattern fixes General Aptitude and Engineering Mathematics marks, but it does not prescribe a guaranteed topic-wise distribution for the remaining BT syllabus or an exact question-type mix.
Yes. As currently published, BT can be combined with BM, ES, EY or XL. Use one application and recheck the official table because allowed combinations may change.
Yes. The official GATE 2027 FAQ says an allowed second paper may be added under the same enrolment ID after payment, subject to the portal timeline and additional fee.
No. The GATE qualifying cutoff is a paper-level mark out of 100. Institutes may shortlist with GATE score out of 1000, rank, degree rules, category, a written test, an interview or a combination of these.
No. You must submit the required application to each institute. COAP is used to view and act on offers from participating institutes; it does not replace the institute application.
CCMT is the centralised counselling route for participating NITs and other listed institutes and programmes. The current eligibility matrix controls whether a BT score and a candidate's degree are accepted.
It depends on the current recruitment notice and the candidate's degree. In BARC OCES/DGFS 2026, BT or XL could be used for Biosciences screening, but degree eligibility was narrow and several biotechnology-titled BTech degrees were explicitly ineligible. Treat this only as a dated example and read the new brochure when released.
It is valid for three years from the result announcement date.
No. Qualification makes the score available for routes that accept it. Each institute, funding scheme or employer applies separate eligibility and selection conditions.
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