Biotechnology and its Applications · Question 39

In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to :

1. action of gut micro-organisms
2. presence of conversion factors in insect gut
3. alkaline pH of the insect gut
4. acidic pH of the insect gut

Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services ?

1. Research Committee on Genetic Manipulation
2. Genetic Engineering Approval Committee
3. Indian Council of Agricultural Research
4. Bio-safety committee

The crops engineered for glyphosate are resistant/tolerant to :

1. Bacteria
2. Herbicides
3. Fungi
4. Insects

The first human hormone produced by recombinant DNA technology is :

1. Estrogen
2. Insulin
3. Thyroxin
4. Progesterone

Which of the following Bt crops is being grown in India by the farmers ?

1. Soybean
2. Cotton
3. Brinjal
4. Maize

RNA interference involves :-

1. Interference of RNA in synthesis of DNA
2. Synthesis of cDNA from RNA using reverse transcriptase
3. Synthesis of mRNA from DNA
4. Silencing of specific mRNA due to complementary RNA

Which one of the following vectors is used to replace the defective gene in gene therapy ?

1. Ti plasmid
2. Cosmid
3. Ri plasmid
4. Adenovirus

Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells) :

1. An antifeedant
2. A toxic protein
3. Both sense and anti-sense RNA
4. A particular hormone

The first clinical gene therapy was given for treating

1. Rheumatoid arthritis
2. Adenosine deaminase deficiency
3. Diabetes mellitus
4. Chicken pox

A single strand of nucleic acid tagged with a radioactive molecule is called

1. Probe
2. Selectable marker
3. Vector
4. Plasmid