Q. No.A protoxin is:
1.
A primitive toxin
2.
A denatured toxin
3.
Toxin produced by protozoa
4.
Inactive toxin
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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 |
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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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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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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 |
COULMN 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. |
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