Biotechnology and its Applications Chapter-Wise Test 21

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which technique is used to detect specific proteins or antigens in a sample?

PCR
Southern blotting
ELISA
Gel electrophoresis
3

ELISA (Enzyme-Linked Immunosorbent Assay) is used to detect specific proteins or antigens in a sample.

Which of the following is correct about molecular diagnostics?

Molecular diagnostics relies only on light microscopy.
Molecular diagnostics uses techniques like PCR for pathogen detection.
Molecular diagnostics cannot detect genetic mutations.
Molecular diagnostics is unrelated to disease management.
2

Molecular diagnostics uses techniques like PCR to detect pathogens, genetic mutations, and other molecular markers for disease management.

Which step in gene cloning involves introducing recombinant DNA into a host cell?

Ligation
Transformation
Selection
Amplification
2

Transformation is the process of introducing recombinant DNA into a host cell for cloning.

What is the term for plants that are genetically identical to the parent plant?

Hybrid
Somaclones
GMO
Mutants
2

Somaclones are genetically identical plants produced through micropropagation.

Which term refers to the manipulation of genes to produce desired traits?

Gene therapy
Genetic engineering
Mutation breeding
Hybridization
2

Genetic engineering refers to the manipulation of genes to produce desired traits in organisms.

Which of the following is incorrect about RNA interference (RNAi)?

RNAi silences specific gene expression.
RNAi uses double-stranded RNA molecules.
RNAi enhances protein synthesis in cells.
RNAi is used for developing pest-resistant crops.
3

RNA interference (RNAi) is used to silence specific gene expression, not to enhance protein synthesis.

Which of the following is an example of a genetically modified crop?

Golden rice
Wheat
Maize
Barley
1

Golden rice is genetically modified to produce beta-carotene, which is a precursor of vitamin A.

Which of the following is incorrect regarding molecular diagnostics?

Molecular diagnostics uses PCR for detecting pathogens.
Molecular diagnostics can detect genetic mutations.
Molecular diagnostics relies only on visual inspection.
Molecular diagnostics is used in disease management.
3

Molecular diagnostics does not rely solely on visual inspection; it uses techniques like PCR and hybridization to detect genetic materials.

What was the first transgenic cow, Rosie, known for?

High milk yield
Producing human protein-enriched milk
Resistance to diseases
Improved digestion
2

Rosie produced milk enriched with human alpha-lactalbumin, making it more balanced for human babies.

Which transgenic animal produced human alpha-lactalbumin in its milk?

Dolly the sheep
Rosie the cow
Oncomouse
GloFish
2

Rosie the transgenic cow produced milk enriched with human alpha-lactalbumin.

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