CBSE Class 12 Biotechnology Boards 2021 Sample Paper Solved

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Sample Question Papers for Class 12 Bio Technology

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SECTION A
 
1. What is a shuttle vector? 
 
2. Name the amino acids involved in the catalytic triad that regulates charge -relay system in the enzyme Chymotrypsin?
 
3. Specify one advantage of developing vectors based on M13. 
 
4. On which chromosome in humans, is the genetic defect for the Huntington disease located?
 
5. Name the red algae from which agar is obtained.
 
6. What is RFLP? 
 
7. What are nutraceutical proteins? 
 
8. What is the disadvantage of using primary animal culture as compared to secondary culture?
 
9. Counting genes and predicting their presence have proved to be laden with inaccuracies. Give reasons.
 
10. Which technique is used to confirm the detection of Sickle cell anaemia? Who developed this technique?
 
11. (i) Assertion – Native enzyme subtilisin is easily inactivated by bleach
Reason- Site directed mutagenesis at codon position 222 to replace methionine with alanine is found best in terms of activity and stability.
 
(a) Both Assertion and Reason are true and the reason is the correct explanation of the assertion
 
(b) Both Assertion and Reason are true but the reason is not the correct explanation of the assertion
 
(c) Assertion is true but Reason is false
 
(d) Both Assertion and Reason are false
OR
(ii) Assertion- OKT-3 is used to prevent graft rejection following kidney transplantation
 
Reason- OKT-3 blocks immune cells which attack foreign grafts.
 
(a) Both Assertion and Reason are true, and the reason is the correct explanation of the assertion
 
(b) Both Assertion and Reason are true, but the reason is not the correct explanation of the assertion
 
(c) Assertion is true but Reason is false
 
(d) Both Assertion and Reason are false
 
12. Composition of minerals like calcium and phosphorus in mg/ml is highest in-
 
(a) Cow milk
 
(b) Buffalo milk
 
(c) Human milk
 
(d) Goat milk
 
13. RefSeq is a curated database of:
 
(a) mRNA and proteins
 
(b) DNA and proteins
 
(c) DNA and m RNA
 
(d) DNA and t RNA
 
14. During isolation of streptomycin, clear broth is-
 
(a) discarded
 
(b) subjected to liquid-liquid extraction chromatography
 
(c) subjected to ultra filtration
 
(d) subjected to solubilization of proteins
 
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CBSE Class 12 Biotechnology Boards 2021 Sample Paper Solved & Sample Question Papers for Class 12 Bio Technology

Class 12 Bio Technology CBSE Class 12 Biotechnology Boards 2021 Sample Paper Solved PDF Download Guide

Explore downloadable sample sets for Class 12 Bio Technology. Utilizing the CBSE Class 12 Biotechnology Boards 2021 Sample Paper Solved allows learners to gauge exam readiness and master official CBSE assessment structures.

Why Practice Class 12 Bio Technology Sample Papers?

  • Curriculum Insights: Clarify chapter-wise weightage rules and question trends across Class 12.
  • Gap Analysis: Check performance drops across sets to isolate specific Class 12 Bio Technology topics needing extra attention.
  • Time Efficiency: Working through objective and descriptive problems builds critical pacing to finish exams comfortably.

How to Analyze Your Performance in CBSE Class 12 Biotechnology Boards 2021 Sample Paper Solved

  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.

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Yes, CBSE Class 12 Biotechnology Boards 2021 Sample Paper 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 Boards 2021 Sample Paper 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.

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