1. graft rejection
2. auto-immune disease
3. active immunity
4. allergic response
Which of the following is correct regarding AIDS causative agent HIV?
| 1. | HIV is an enveloped virus containing one molecule of single-stranded RNA and one molecule of reverse transcriptase |
| 2. | HIV is an enveloped virus that contains two identical molecules of single-stranded RNA and two molecules of reverse transcriptase |
| 3. | HIV is an unenveloped retrovirus |
| 4. | HIV does not escape but attacks the acquired immune response |
MALT constitutes about _______ percent of the lymphoid tissue in the human body.
| 1. | 20% | 2. | 70% |
| 3. | 10% | 4. | 50% |
Which part of poppy plant is used to obtain the drug Smack?
| 1. | Flowers | 2. | Latex |
| 3. | Roots | 4. | Leaves |
What is the criterion for the movement of DNA fragments on agarose gel during gel electrophoresis?
| 1. | The smaller the fragment size, the farther it moves |
| 2. | Positively charged fragments move to farther end |
| 3. | Negatively charged fragments do not move |
| 4. | The larger the fragment size, the farther it moves |
First discovered restriction endonuclease that always cuts DNA molecules at a particular point by recognizing a specific sequence of six base pairs is:
1. EcoRI
2. Adenosine deaminase
3. Thermostable DNA polymerase
4. Hind II
| 1. | phosphodiester bonds | 2. | covalent bonds |
| 3. | disulphide bridges | 4. | hydrogen bonds |
The exploitation of bioresources of a nation by multinational companies without authorization from the concerned country is referred to as:
| 1. | Bioweapon | 2. | Biopiracy |
| 3. | Bioethics | 4. | Biowar |
What triggers the activation of protoxin to active Bt toxin of Bacillus thuringiensis in bollworms?
1. Acidic pH of the stomach
2. Body temperature
3. Moist surface of midgut
4. Alkaline pH of the gut
Which of the following is true for Golden rice?
| 1. | It has yellow grains, because of gene introduced from a primitive variety of rice |
| 2. | It is Vitamin A enriched, with a gene from daffodil |
| 3. | It is pest resistant, with a gene from Bacillus thuringiensis |
| 4. | It is drought tolerant, developed using Agrobacterium vector |
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