At present transgenic animals cannot be used for:
1. | Harvesting biological products |
2. | Testing vaccine safety |
3. | Study of human diseases |
4. | Xenotransplantation |
Which of these is an accurate description of gene therapy?
1. | A form of site directed mutagenesis. |
2. | Introduction of cloned genes into living cells to cure disease. |
3. | Cloning of a disease gene in order to understand the disease. |
4. | All of these. |
The first drug produced using recombinant DNA technology is used to treat:
1. | haemophilia | 2. | dwarfism |
3. | immunodeficiency | 4. | diabetes |
The two polypeptide chains of insulin protein are linked together by:
1. | disulfide bonds | 2. | hydrogen bonds |
3. | covalent bonds | 4. | ionic bonds |
The viruses generally used for gene therapy are:
1. | ds DNA virus | 2. | ss DNA virus |
3. | Reovirus | 4. | Reterovirus |
Bacillus thuringiensis (Bt) strains have been used to design novel:
1. | Biofertilizers | 2. | Biometallurgic techniques |
3. | Biomineralization processes | 4. | Bioinsecticidal plants |
1. | A part of mature insulin molecule |
2. | Responsible for formation of disulphide bridges |
3. | Removed during maturation of pro-insulin to insulin |
4. | Responsible for its biological activity |
A probe which is a molecule used to locate homologous sequences in a mixture of DNA or RNA molecules could be:
1. | A ssRNA | 2. | A ssDNA |
3. | Either RNA or DNA | 4. | Can be ssDNA but not ssRNA |
A protoxin is:
1. | A primitive toxin | 2. | A denatured toxin |
3. | Toxin produced by protozoa | 4. | Inactive toxin |
The trigger for activation of toxin of Bacillus thuringiensis is:
1. | Acidic pH of stomach |
2. | High temperature |
3. | Alkaline pH of gut |
4. | Mechanical action in the insect gut |