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Q. No.The bacterium Bacillus thuringiensis is widely used in contemporary biology as a/an:
1. indicator of water pollution
2. insecticide
3. agent for production of dairy products
4. source of industrial enzyme
Subtopic: Bt Crops |
91%
From NCERT
AIPMT - 2009
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The genetic defect-Adenosine Deaminase (ADA) deficiency may be cured permanently by:
| 1. | periodic infusion of genetically engineered lymphocytes having functional ADA cDNA |
| 2. | administering adenosine deaminase activators |
| 3. | introducing bone marrow cells producing ADA into cells at early embryonic stages |
| 4. | invitro cell culture therapy |
Subtopic: Gene Therapy |
89%
From NCERT
AIPMT - 2009
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Which one of the following is commonly used in the transfer of foreign DNA into crop plants?
1. Trichoderma harzianum
2. Meloidogyne incognita
3. Agro bacterium tumefaciens
4. Penicillium expansum
Subtopic: Interference RNA Tech |
82%
From NCERT
AIPMT - 2009
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What is true about Bt toxin?
| 1. | the inactive protoxin gets converted into active form in the insect gut |
| 2. | Bt protein exists as active toxin in the Bacillus |
| 3. | The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication |
| 4. | the concerned Bacillus has antitoxins |
Subtopic: Bt Crops |
94%
From NCERT
AIPMT - 2009
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Transgenic plants are:
| 1. | produced by a somatic embryo in artificial medium |
| 2. | generated by introducing foreign DNA into a cell and regenerating a plant from that cell |
| 3. | Produced after protoplast fusion in artificial medium |
| 4. | grown in artificial medium after hybridization in the field |
Subtopic: Intro to Agri Applications | Other GM Crops |
87%
From NCERT
AIPMT - 2009
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A transgenic food crop, which may help in solving the problem of night blindness in developing countries is:
| 1. | Flavr savr tomatoes |
| 2. | Starlink maize |
| 3. | Bt soybean |
| 4. | Golden rice |
Subtopic: Intro to Agri Applications | Other GM Crops |
91%
From NCERT
AIPMT - 2008
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Main objective of production/use of herbicide-resistant GM crops is to:
| 1. | eliminate weeds from the field without the use of manual layout |
| 2. | eliminate weeds from the field without the use of herbicides |
| 3. | encourage eco-friendly herbicides |
| 4. | reduce herbicide accumulation in food particles for health safety |
Subtopic: Intro to Agri Applications | Other GM Crops |
From NCERT
AIPMT - 2008
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Human insulin is being commercially produced from a transgenic species of:
1. Escherichia
2. Mycobacterium
3. Rhizobium
4. Saccharomyces
Subtopic: Med Applications & Humulin |
91%
From NCERT
AIPMT - 2008
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Cry-IAc endotoxins obtained from Bacillus thuringiensis are effective against:
| 1. | mosquitoes | 2. | flies |
| 3. | nematodes | 4. | bollworms |
Subtopic: Bt Crops |
90%
From NCERT
AIPMT - 2008
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What is antisense technology?
| 1. | A cell displaying a foreign antigen used for the synthesis of antigens. |
| 2. | Production of somaclonal variants in tissue cultures. |
| 3. | When a piece of RNA that is complementary in sequence is used to stop the expression of a specific gene |
| 4. | RNpolymerase-producingng DNA |
Subtopic: Interference RNA Tech |
92%
From NCERT
AIPMT - 2008
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