Class 12 Biology MCQ Chapter 12 Biotechnology and its Applications

Class 12 Biology MCQ Chapter 12 Biotechnology and its Applications Solutions English Medium to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Biology MCQ Chapter 12 Biotechnology and its Applications Question Answer in English and select need one. AHSEC Class 12 Biology Objective Type Question Answer As Per AHSEC New Book Syllabus Download PDF. AHSEC Biology MCQ Class 12 Solutions.

Class 12 Biology MCQ Chapter 12 Biotechnology and its Applications

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Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. AHSEC Class 12 Biology Multiple Choice Solutions in English Medium are part of All Subject Solutions. Here we have given AHSEC Class 12 Biology MCQ Question Answer English Medium for All Chapters, You can practice these here.

Biotechnology and its Applications

Chapter: 12

Choose the Correct Option:

1. Biotechnology is the use of living organisms to:

(i) Improve crops.

(ii) Produce useful products.

(iii) Generate electricity.

(iv) All of the above.

Ans: (ii) Produce useful products.

2. The Green Revolution primarily involved the use of:

(i) Traditional crops.

(ii) High-yielding varieties and agrochemicals.

(iii) Genetically modified crops.

(iv) Bioreactors.

Ans: (ii) High-yielding varieties and agrochemicals.

3. The ability of plant cells to regenerate into a whole plant is known as:

(i) Totipotency.

(ii) Regeneration.

(iii) Cloning.

(iv) Hybridization.

Ans: (i) Totipotency.

4. What is the purpose of introducing a foreign gene into crops like Bt-cotton?

(i) To increase yield.

(ii) To make the plant resistant to pests.

(iii) To improve nutritional content.

(iv) All of the above.

Ans: (ii) To make the plant resistant to pests.

5. Which of the following is produced using recombinant DNA technology?

(i) Human insulin.

(ii) Growth hormones.

(iii) Enzymes like amylase.

(iv) All of the above.

Ans: (iv) All of the above.

6. What does PCR (Polymerase Chain Reaction) help in?

(i) Cloning organisms.

(ii) Amplifying DNA.

(iii) Cutting DNA at specific sites.

(iv) Transferring genes into cells.

Ans: (ii) Amplifying DNA.

7.  Which enzyme is used in PCR to synthesize complementary DNA strands?

(i) DNA polymerase.

(ii) RNA polymerase.

(iii) DNA ligase.

(iv) Reverse transcriptase.

Ans: (i) DNA polymerase.

8. Which of the following is used to separate DNA fragments based on size?

(i) PCR.

(ii) Gel electrophoresis.

(iii) Cloning vectors.

(iv) Gene therapy.

Ans: (ii) Gel electrophoresis.

9. What is the purpose of a selectable marker in recombinant DNA technology?

(i) To amplify DNA.

(ii) To identify transformed cells.

(iii) To replicate DNA.

(iv) To cut DNA at specific locations.

Ans: (ii) To identify transformed cells.

10. What is a commonly used selectable marker in genetic engineering?

(i) Green fluorescent protein.

(ii) Antibiotic resistance gene.

(iii) Gene for viral resistance.

(iv) None of the above.

Ans: (ii) Antibiotic resistance gene.

11. What is the role of DNA ligase in recombinant DNA technology?

(i) To cut DNA into fragments.

(ii) To join DNA fragments.

(iii) To synthesize DNA.

(iv) To separate DNA strands.

Ans: (ii) To join DNA fragments.

12. Which of the following organisms is commonly used as a host for cloning?

(i) Yeast.

(ii) Bacteria like E. coli.

(iii) Insects.

(iv) Plants.

Ans: (ii) Bacteria like E. coli.

13. What is the purpose of transgenic animals in research?

(i) To produce proteins for human use.

(ii) To study the effect of genes on diseases.

(iii) To test vaccines.

(iv) All of the above.

Ans: (iv) All of the above.

14. Which animal has been used to produce human proteins in milk?

(i) Mice.

(ii) Cows.

(iii) Sheep.

(iv) Goats.

Ans: (iv) Goats.

15. What is the role of Agrobacterium tumefaciens in plant genetic engineering?

(i) It is used to introduce genes into plants.

(ii) It is used to create virus-free plants.

(iii) It is used to introduce foreign genes into animals.

(iv) It causes diseases in plants.

Ans: (i) It is used to introduce genes into plants.

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