Biotechnology and its Applications

Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to

1. Insect predators
2. Insect pests
3. Fungal diseases
4. Plant nematodes

Which of the following statements is not correct?

1. In man insulin is synthesised as a proinsulin
2. The proinsulin has an extra peptide called C-peptide.
3. Genetically engineered insulin is produced in E. coli.
4. The functional insulin has A and B chains linked together by hydrogen bonds.

Match the following columns and select the correct option.

1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
3. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
4. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

1. Acidic pH of stomach
2. Body temperature
3. Alkaline pH of gut
4. Moist surface of midgut

Which of the following is true for Golden rice?

1. It is drought tolerant, developed using Agrobacterium vector.
2. It has yellow grains, because of a gene introduced from a primitive variety of rice.
3. It is Vitamin A enriched, with a gene from daffodil.
4. It is pest resistant, with a gene from Bacillus thuringiensis.

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

1. Retrovirus
2. Ti plasmid
3. phage
4. pBR322

In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is

1. Indian Council of Medical Research (ICMR)
2. Council for Scientific and Industrial Research (CSIR)
3. Research Committee on Genetic Manipulation (RCGM)
4. Genetic Engineering Appraisal Committee (GEAC)

A 'new' variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to

1. Co-667
2. Sharbati Sonora
3. Lerma Rojo
4. Basmati

Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

1. bio-infringement
2. biodegradation
3. biopiracy
4. bioexploitation

The two polypeptides of human insulin are linked together by

1. Hydrogen bonds
2. Covalent bond
3. Disulphide bridges
4. Phosphodiester bond