Q. No.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
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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 |
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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 antitrypsin |
| 4. | Is protein enriched |
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Match each item in Column I with one in Column II and select the answer from the codes given below:
|
Column I |
Column II |
||
|
A. |
Bioprospecting |
a. |
the process of discovery and commercialization of new products based on biological resources |
|
B. |
Biopiracy |
b. |
the exploitative patenting of already widely used natural resources, such as plant varieties, by commercial entities |
|
C. |
Bioremediation |
c. |
a process that uses microorganisms or their enzymes to treat polluted sites for regaining their original condition |
|
D. |
Biofortification |
d. |
the process by which the nutritional quality of food crops is improved through agronomic practices, conventional plant breeding, or modern biotechnology |
Codes
| Options: | A | B | C | D |
| 1. | a | b | c | d |
| 2. | a | b | d | c |
| 3. | b | a | c | d |
| 4. | b | a | d | c |
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Antisense technology:
| 1. | selectively blocks the expression of a gene. |
| 2. | combines genetic material from different species. |
| 3. | combines organelles and cells. |
| 4. | alters or transfers cells. |
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 |
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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
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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 |
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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 |
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