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9C) Biotechnology (Prelims PYQs)

8C) Biotechnology (Prelims PYQs)
8C) Biotechnology (Prelims PYQs)

1] Consider the following statements: [2022]
DNA Barcoding can be a tool to:
1. Assess the age of a plant or animal.
2. Distinguish among species that look alike.
3. Identify undesirable animal or plant materials in processed foods.
Which of the statements given above is/are correct?

a) 1 only
b) 3 only
c) 1 and 2
d) 2 and 3

Show Answer

Ans: d) 2 and 3

2] In the context of vaccines manufactured to prevent COVID-19 pandemic, consider the following statements: [2022]
1. The Serum Institute of India produced COVID-19 vaccine named Covishield using mRNA platform.
2. Sputnik V vaccine is manufactured using vector based platform.
3. COVAXIN is an inactivated pathogen ‘based vaccine.
Which of the statements given. above are correct?

a) 1 and 2 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3

Show Answer

Ans: b) 2 and 3 only

3] Consider the following statements: [2022]
1. Biofilms can form on medical implants within human tissues.
2. Biofilms can form on food and food processing surfaces.
3. Biofilms can exhibit antibiotic resistance.
Which of the statements given above are correct?

a) 1 and 2 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3

Show Answer

Ans: d) 1, 2 and 3

4] Bollgard I and Bollgard II technologies are mentioned in the context of: [2021]

a) Clonal propagation of crop plants
b) Developing genetically modified crop plants
c) Production of plant growth substances
d) Production of biofertilizers

Show Answer

Ans: b) Developing genetically modified crop plants

5] With reference to recent developments regarding ‘Recombinant Vector Vaccines’, consider the following statements: [2021]
1) Genetic engineering is applied in the development of these vaccines.
2) Bacteria and viruses are used as vectors.
Which of the statements given above is/are correct?

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2

Show Answer

Ans: c) Both 1 and 2

6] With reference to carbon nanotubes, consider the following statements: [2020]

1. They can be used as carriers of drugs and antigens in the human body.
2. They can be made into artificial blood capillaries for an injured part of the human body.
3. They can be used in biochemical sensors.
4. Carbon nanotubes are biodegradable.
Which of the statements given above are correct?

a) 1 and 2 only
b) 2, 3 and 4 only
c) 1, 3 and 4 only
d) 1, 2, 3 and 4

Show Answer

Ans: c) 1, 3 and 4 only

7] Consider the following statements: [2020]
1. Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent.
2. A person’s genome can be edited before birth at the early embryonic stage.
3. Human induced pluripotent stem cells can be injected into the embryo of a pig.
Which of the statements given above is/are correct?

a) 1 only
b) 2 and 3 only
c) 2 only
d) 1, 2 and 3

Show Answer

Ans: d) 1, 2 and 3

8] What is the importance of using Pneumococcal Conjugate Vaccines in India? [2020]
1. These vaccines are effective against pneumonia as well as meningitis and sepsis.
2. Dependence on antibiotics that are not effective against drug-resistant bacteria can be reduced.
3. These vaccines have no side effects and cause no allergic reactions.
Select the correct answer using the code given below:

a) 1 only
b) 1 and 2 only
c) 3 only
d) 1, 2 and 3

Show Answer

Ans: b) 1 and 2 only

9] In the context of recent advances of human reproductive technology, “Pronuclear Transfer” is used for: [2020]

a) Fertilization of egg in vitro by the donor sperm
b) Genetic modification of sperm producing cells
c) Development of stem cells into functional embryos
d) Prevention of mitochondrial diseases in offspring

Show Answer

Ans: d) Prevention of mitochondrial diseases in offspring

10] With reference to the recent developments in science, which one of the following statements is not correct? [2019]

a) Functional chromosomes can be created by joining segments of DNA taken from cells of different species.
b) Pieces of artificial functional DNA can be created in laboratories.
c) A piece of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratory.
d) Cells taken out from plasma and animals can be made to undergo cell division in laboratory petri dishes.

Show Answer

Ans: a) Functional chromosomes can be created by joining segments of DNA taken from cells of different species.

11] ‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why? [2019]
1. It is used in developing gene silencing therapies.
2. It can be used in developing therapies for the treatment of cancer.
3. It can be used to develop hormone replacement therapies.
4. It can be used to produce crop plants that are resistant to viral pathogens.
Select the correct answer using the code given below.

a) 1, 2 and 4
b) 2 and 3
c) 1 and 3
d) 1 and 4 only

Show Answer

Ans: a) 1, 2 and 4

12] What is Cas9 protein that is often mentioned in news? [2019]

a) A molecular scissors used in targeted gene editing
b) A biosensor used in the accurate detection of pathogens in patients
c) A gene that makes plants pest-resistant
d) A herbicidal substance synthesized in genetically modified crops

Show Answer

Ans: a) A molecular scissors used in targeted gene editing

13] With reference to the Genetically Modified mustard (GM Mustard) developed in India, consider the following statements: [2018]
1. GM Mustard has the genes of the soil bacterium that give the plant the property of pest-resistance to a wide variety of pests.
2. GM Mustard has the genes that allow the plant cross-pollination and hybridization.
3. GM mustard has been developed jointly by the IARI and Punjab Agricultural University.
Which of the statements given above is/are correct?

a) 1 and 3 only
b) 2 only
c) 2 and 3 only
d) 1, 2 and 3

Show Answer

Ans: b) 2 only

14] With reference to agriculture in India, how can the technique of `genome sequencing’, often seen in the news, be used in the immediate future? [2017]
1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants.
2. This technique helps in reducing the time required to develop new varieties of crop plants.
3. It can be used to decipher the host-pathogen relationships in crops.
Select the correct answer using the code given below:

a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3

Show Answer

Ans: d) 1, 2 and 3

15] What is the application of Somatic Cell Nuclear Transfer Technology? [2017]

a) Production of biolarvicides
b) Manufacture of biodegradable plastics
c) Reproductive cloning of animals
d) Production of organisms free of diseases

Show Answer

Ans: c) Reproductive cloning of animals

16] In the context of the developments in Bioinformatics, the term ‘transcriptome’, sometimes seen in the news, refers to: [2016]

a) A range of enzymes used in genome editing
b) The full range of mRNA molecules expressed by an organism
c) The description of the mechanism of gene expression
d) A mechanism of genetic mutations taking place in cells 

Show Answer

Ans: b) The full range of mRNA molecules expressed by an organism

17] The Genetic Engineering Appraisal Committee is constituted under the: [2015]

a) Food Safety and Standards Act, 2006
b) Geographical Indications of Goods (Registration and Protection) Act, 1999
c) Environment (Protection) Act, 1986
d) Wildlife (Protection) Act, 1972

Show Answer

Ans: c) Environment (Protection) Act, 1986

18] With reference to the use of nanotechnology in health sector, which of the following statements is/are correct? [2015]
1. Targeted drug delivery is made possible by nanotechnology
2. Nanotechnology can largely contribute to gene therapy
Select the correct answer using the code given below.

a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2

Show Answer

Ans: c) Both 1 and 2

19] Consider the following techniques/phenomena: [2014]
1. Budding and grafting in fruit plants
2. Cytoplasmic male sterility
3. Gene silencing
Which of the above is/are used to create transgenic crops?

a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) None

Show Answer

Ans: b) 2 and 3 only

20] Recombinant DNA technology (genetic engineering) allows genes to be transferred: [2013]
1. Across different species of plants
2. From animals to plants
3. From microorganisms to higher organisms
Select the correct answer using the codes given below.

a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3

Show Answer

Ans: d) 1, 2 and 3

21] Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to? [2013]
1. Resist drought and increase absorptive area
2. Tolerate extremes of ph
3. Resist disease infestation
Select the correct answer using the codes given below.

a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2, and 3

Show Answer

Ans: d) 1, 2, and 3

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