Biotechnology and its Applications Chapter-Wise Test 18

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which biotechnological technique is used to detect genetic disorders by amplifying DNA?

ELISA
PCR
Southern blotting
Gene editing
2

PCR (Polymerase Chain Reaction) is used to amplify DNA, making it possible to detect genetic disorders early.

What is the role of cry genes in Bt cotton?

Promote plant growth
Provide resistance to insect pests
Increase seed production
Improve water retention
2

Cry genes produce proteins toxic to insects, providing pest resistance in Bt cotton.

Which recombinant DNA product is used for treating adenosine deaminase deficiency?

Human insulin
Growth hormone
Recombinant ADA
Interferon
3

Recombinant adenosine deaminase (ADA) is used to treat ADA deficiency through gene therapy.

Which Indian food crop faced biopiracy issues due to patenting by an American company?

Wheat
Basmati rice
Maize
Sugarcane
2

Basmati rice from India faced biopiracy issues when an American company patented a 'new' variety derived from Indian strains.

Which molecule acts as a vector in gene therapy for ADA deficiency?

Plasmid
Retrovirus
Phage
Cosmid
2

Retrovirus is used as a vector to introduce the functional ADA gene in gene therapy for ADA deficiency.

What is the purpose of the Genetic Engineering Approval Committee (GEAC) in India?

Approving new antibiotics
Regulating GMOs and genetic research
Managing organic farming
Issuing patents for GMOs
2

GEAC regulates the use, research, and approval of genetically modified organisms in India.

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

RNAi silences specific gene expression.
RNAi uses double-stranded RNA molecules.
RNAi enhances gene expression in all cases.
RNAi is used in developing pest-resistant crops.
3

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

Which type of diagnostic tool is used to detect very low amounts of nucleic acids in pathogens?

ELISA
PCR
Northern blotting
Flow cytometry
2

PCR (Polymerase Chain Reaction) is used to amplify and detect very low amounts of nucleic acids.

Which component in tissue culture media is essential for providing vitamins for plant growth?

Sucrose
Amino acids
Inorganic salts
Vitamins
4

Vitamins in tissue culture media are essential for plant cell growth and metabolic processes.

Which component is removed during the maturation of proinsulin to form active insulin?

A chain
B chain
C peptide
Disulfide bonds
3

The C peptide is removed during the maturation of proinsulin to form active insulin.

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