CBSE Class 11 Bio Technology Syllabus 2027 (Subject Code 045) has been released by the Central Board of Secondary Education for the 2026-27 academic session. It is a 100-mark course – 70 marks Theory across four units (Biotechnology: An Overview, Molecules of Life, Genetics and Molecular Biology, and Cells and Organisms) written in a 3-hour exam, plus 30 marks Practical. Download the official CBSE Class 11 Bio Technology Syllabus PDF and see the full unit-wise breakdown below.
CBSE Class 11 Bio Technology Syllabus 2027 PDF
The complete curriculum is as follows.
CBSE Senior Secondary Syllabus 2027 Bio Technology View Download
CBSE Class 11 Bio Technology Syllabus 2027 – Marks Weightage (Unit-wise)
The CBSE Class 11 Bio Technology exam carries 100 total marks – 70 for the Theory paper (four units) and 30 for the Practical examination.
| Unit | Title | Marks |
|---|---|---|
| Unit I | Biotechnology: An Overview | 5 |
| Unit II | Molecules of Life | 20 |
| Unit III | Genetics and Molecular Biology | 20 |
| Unit IV | Cells and Organisms | 25 |
| Theory Total | 70 | |
| Practical | Laboratory experiments, viva & record | 30 |
| Total | 100 |
CBSE Class 11 Bio Technology Syllabus 2027 – Unit-wise Topics
The Theory (70 marks) portion of the CBSE Class 11 Bio Technology syllabus is organised into four units. The chapters and topics prescribed under each unit are as follows.
CBSE Class 11 Bio Technology Syllabus 2027 – Prescribed Textbook & Practicals
Bio Technology in Class 11 is a theory-plus-practical science subject. The theory paper is worth 70 marks and the practical examination is worth 30 marks, as shown below.
Prescribed Textbook: A Text Book of Biotechnology – Class XI (published by CBSE, New Delhi) with Biotechnology – Class XI (published by NCERT, New Delhi) as reference, and A Laboratory Manual of Biotechnology – Class XI (published by CBSE, New Delhi) for practical work.
Practicals (30 marks): Every student must perform the following experiments during the academic session – (1) Preparation of buffers and pH determination, (2) Sterilization techniques, (3) Preparation of bacterial growth medium, (4) Cell counting, (5) Sugar estimation using the Di-Nitro Salicylic Acid (DNS) test, (6) Assay for amylase enzyme, and (7) Protein estimation by the biuret method. The Scheme of Evaluation allots 20 marks to two experiments, 5 marks to viva, and 5 marks to the practical record.
CBSE Class 11 Bio Technology Syllabus 2027 – Exam Pattern
The CBSE Class 11 Bio Technology examination is split between a 70-mark Theory paper and a 30-mark Practical. The scheme and weightage are as follows.
| Component | Details | Time | Marks |
|---|---|---|---|
| Theory Paper | Four units – Overview, Molecules of Life, Genetics & Molecular Biology, Cells and Organisms | 3 hours | 70 |
| Practical – Two experiments | Any two of the seven prescribed experiments | 3 hours | 20 |
| Practical – Viva | Viva on experiments | – | 5 |
| Practical – Record | Practical record file | – | 5 |
| Total | 100 |
CBSE Class 11 Bio Technology Syllabus 2027 – Continue Your Preparation
Once you have reviewed the syllabus, practice with CBSE Sample Papers and strengthen your fundamentals with NCERT Books for Class 11 and NCERT Solutions for Class 11 to prepare for your Bio Technology exam.
Frequently Asked Questions
The CBSE Class 11 Bio Technology Syllabus 2027 (Subject Code 045) is the official curriculum released by CBSE for the 2026-27 academic session. It has four theory units – Biotechnology: An Overview, Molecules of Life, Genetics and Molecular Biology, and Cells and Organisms – for 70 marks, plus a 30-mark practical, making a total of 100 marks.
The subject code for Bio Technology in CBSE Class 11 is 045.
The CBSE Class 11 Bio Technology exam is of 100 marks – 70 marks for the 3-hour Theory paper and 30 marks for the Practical. Unit-wise, Theory is split as Unit I (5), Unit II (20), Unit III (20) and Unit IV (25) marks.
The prescribed textbook is A Text Book of Biotechnology – Class XI, published by CBSE, New Delhi, with the NCERT Biotechnology Class XI book as reference and a CBSE Laboratory Manual of Biotechnology for practical work.
There are 7 prescribed practicals, including preparation of buffers and pH determination, sterilization techniques, bacterial growth medium preparation, cell counting, sugar estimation (DNS test), amylase enzyme assay and protein estimation by the biuret method. The 30-mark practical exam awards 20 marks for two experiments, 5 for viva and 5 for the record.
CBSE Class 11 Syllabus 2026-27 (All Subjects)
You study more subjects besides Bio Technology in Class 11. The subject-wise syllabus for CBSE Class 11 students is as follows.
CBSE Syllabus 2026-27 (Class-wise)
The class-wise syllabus for CBSE board students is as follows.
CBSE Class 11 Bio Technology Syllabus 2027 – An Overview
The important things to know about this curriculum are as follows.
| Aspects | Details |
|---|---|
| Education Board | CBSE |
| Class | Class 11 |
| Subject | Bio Technology (Code 045) |
| Study Material Here | CBSE Syllabus for Class 11 Bio Technology |
| All Curriculum for This Class | CBSE Syllabus for Class 11 |
| All Curriculum for This Board | CBSE Syllabus |
| Full Name of CBSE | Central Board of Secondary Education |
| NCERT Books | NCERT Books for Class 11 |
| NCERT Solutions | NCERT Solutions for Class 11 |
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