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Q. No.A protoxin is:
1.
A primitive toxin
2.
A denatured toxin
3.
Toxin produced by protozoa
4.
Inactive toxin
Subtopic: Bt Crops |
91%
Level 1: 80%+
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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 |
Subtopic: Bt Crops |
96%
Level 1: 80%+
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ADA is an enzyme which is deficient in a genetic disorder SCID. What is the full form of ADA?
| 1. | Adenosine deoxyaminase | 2. | Adenosine deaminase |
| 3. | Aspartate deaminase | 4. | Arginine deaminase |
Subtopic: Gene Therapy | Molecular Diagnosis |
95%
Level 1: 80%+
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Silencing of a gene could be achieved through the use of:
| 1. | RNAi only | 2. | antisense RNA only |
| 3. | both RNAi and antisense RNA | 4. | none of the above |
Subtopic: Interference RNA Tech |
80%
Level 1: 80%+
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The term ‘totipotency’ refers to the capacity of a:
1. cell to generate the whole plant
2. bud to generate the whole plant
3. seed to germinate
4. cell to enlarge in size
Subtopic: Plant Tissue Culture |
93%
Level 1: 80%+
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The plantlets produced during plant tissue culture are called somaclones because:
| 1. | They can be produced in a very short span of time |
| 2. | They are the result of the somatic hybridization of two cells |
| 3. | The gametes develop parthenogenetically to produce genetically identical plantlets |
| 4. | They are genetically identical to the original plant from which they were grown |
Subtopic: Plant Tissue Culture |
73%
Level 2: 60%+
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RNAi, as a mechanism of cellular defense, takes place in:
| 1. | All bacteria | 2. | All unicellular organisms |
| 3. | All plants only | 4. | All eukaryotic organisms |
Subtopic: Interference RNA Tech |
83%
Level 1: 80%+
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The first clinical gene therapy trial was given in 1990 to a 4 year girl with:
| 1. | Alpha – 1 antitrypsin deficiency |
| 2. | Cystic fibrosis |
| 3. | Adenosine deaminase deficiency |
| 4. | Chronic myeloid leukemia |
Subtopic: Gene Therapy |
96%
Level 1: 80%+
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Subtopic: Transgenic Microbes & Animals |
97%
Level 1: 80%+
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The transgenic cow, Rosie, produced milk that:
| 1. | contained human beta-lactalbumin |
| 2. | contained interferons to treat viral infections |
| 3. | contained Alpha-1 – 1 antitrypsin |
| 4. | is protein enriched |
Subtopic: Transgenic Microbes & Animals |
50%
Level 3: 35%-60%
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