CBSE Class 12 Biotechnology Sample Paper 2019 Solved

Bio Technology
Download PDF

Official CBSE Practice Papers for Class 12 Bio Technology

Access comprehensive sample question papers for Class 12 Bio Technology using the CBSE Class 12 Biotechnology Sample Paper 2019 Solved. Designed to align with the 2026-27 CBSE academic guidelines, these model papers help students assess their exam readiness and understand current marking schemes.

Solved Model Papers for Bio Technology

Access the complete sample paper PDF for Class 12 Bio Technology below. Regular practice with these targeted mock exams builds familiarity with expected question patterns and chapter weightage to help secure higher marks.

CBSE Class 12 Biotechnology Sample Paper 2019 Solved. CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.

1. 4 copies of ds DNA are subjected to polymerase chain reaction. How many copies would be obtained after 20 cycles?

OR

How can we use LEU 2 gene as a selectable marker?

2. Specify the role of alkaline phosphatase in cloning. 

3. Specific activity increases during subsequent steps of a protein purification scheme. How can you relate it with the purity of protein?

4. Animal cells in a culture medium were placed in a regular incubator used for growing bacterial cells. Do you expect the animal cells to grow or not?

5. What is Gene Knock out? 

6. What will be the consequence if a protein is having an altered structure?

OR

Expand and define PER?

SECTION-B

7. What are inverted microscopes and why are they useful in animal cell culture lab?

OR

Enlist the advantages and limitations of animal cell culture (two each).

8. Explain a visual method of screening the transformed host cells. 
 
9. Interspecific cross leads to formation of sterile seeds. What could be the reasons for the same and how can normal development be achieved?
 
10. A protein from cell A and cell B is compared to find the whole protein pattern by a technique
developed by O’Farrel. Name the technique. State its principle.
 
11. C.elegans is a eukaryotic organism with a genome of 97 Mb and about 20,000 genes. What organizational features of this genome are unusual when compared to the genomes of other eukaryotes, such as yeast and Drosophila?
 
OR
Annotation of human genome sequence reveals that our genome contains 30000- 33000 genes.Proteomic analysis indicates that human cells are capable of synthesizing more than 30,000 different proteins. How can this discrepancy be reconciled?
 
12. Foot and Mouth Disease Virus(FMDV) vaccine is made by growing the virus in animal cells,harvesting the virus and inactivating it for vaccine formulations. Given the following data,calculate the weight and volume of the harvested virus from a bioreactor-
(a) Total bioreactor capacity= 1000 l( atleast 20% space must be kept for oxygen and CO2 )
(b) Number of animal cells= 105/ml
(c) Number of virus particles/animal cell=50
Assume the virus to be a sphere with a gram molecular weight of 106 Daltons (1 million) and radius = 1nm.
OR
Recombinant insulin is produced at 100 mg/L by E. coli at a cell concentration of 1 g/L.
Calculate the volume of reactor (size of the fermentor) needed to produce 1 Kilogram of insulin in the following conditions:
(a) When the cell concentration is 1 g/L and insulin production is 100 mg /L.
(b) When the cell concentration is 50 g/L and insulin production is 100 mg /L.
 
13. Name the plant variations developed by long term callus and suspension culture in plants.How can such variations be used in crop improvement?
 
14. Foaming is a problem in most microbiological processes. Mention any two possible causes of this problem? How can it be controlled?
 
SECTION-C
 
15. What is Molecular Pharming ?State its advantages (any 4) 
 
16. Outline the process of creation of chimeric mouse by embryonic stem cell culture.


Please click the link below to download full pdf file for CBSE Class 12 Biotechnology Sample Paper 2019 Solved.

Free study material for Bio Technology

Download CBSE Sample Papers: Class 12 Bio Technology

Download Sample Paper: CBSE Class 12 Biotechnology Sample Paper 2019 Solved (Class 12 Bio Technology)

Explore downloadable sample sets for Class 12 Bio Technology. Utilizing the CBSE Class 12 Biotechnology Sample Paper 2019 Solved allows learners to gauge exam readiness and master official CBSE assessment structures.

Key Advantages of Solving CBSE Class 12 Biotechnology Sample Paper 2019 Solved

  • Original Practice Material: Access unique questions for Bio Technology designed to challenge your understanding.
  • Self-Assessment: Evaluate scores per set to pinpoint weak zones in Class 12 Bio Technology.
  • Exam Completion Skills: Routine problem sets train you to manage test duration efficiently without stress.

Post-Practice Strategy for Class 12 Bio Technology

  1. Self-Evaluation: Score your answers using official guidance to track your academic progress.
  2. Mistake Correction: Class 12 pupils must re-solve questions answered incorrectly to master the correct method.
  3. Continuous Practice: Take additional Bio Technology sample modules online to maximize preparedness for CBSE evaluations.

FAQs

Where can I download the PDF for CBSE Class 12 Biotechnology Sample Paper 2019 Solved?

You can download the complete PDF for CBSE Class 12 Biotechnology Sample Paper 2019 Solved for free from StudiesToday.com. Our resources for Class 12 Bio Technology are updated for the latest academic session and follow the official exam pattern.

Are solutions provided for CBSE Class 12 Biotechnology Sample Paper 2019 Solved?

Yes, CBSE Class 12 Biotechnology Sample Paper 2019 Solved comes with detailed, teacher-verified solutions. We have provided step-by-step answers for Bio Technology to help students of Class 12 understand correct methodology and marking scheme.

How can practicing CBSE Class 12 Biotechnology Sample Paper 2019 Solved help in exam preparation?

Practicing this Bio Technology paper helps in time management and identifying important topics. For Class 12, solving mock papers is the best way to gain confidence and reduce exam-day anxiety.

Is the CBSE Class 12 Biotechnology Sample Paper 2019 Solved accessible on mobile and tablets?

Yes, all our study materials for Class 12 Bio Technology are provided in a mobile-friendly PDF format. You can easily download CBSE Class 12 Biotechnology Sample Paper 2019 Solved on your mobile device.