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A bacterial cell was transformed with a recombinant DNA molecule that was generated using a human gene. However, the transformed cells did not produce the desired protein. The reasons could be:
| 1. | Human genes may have intron which bacteria cannot process |
| 2. | Amino acid codons for humans and bacteria are different |
| 3. | Human protein is formed but degraded by bacteria |
| 4. | All of the above |
Subtopic: Â Tools |Â General Design of an rDNA experiment |
 61%
Level 2: 60%+
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The enzyme DNA ligase, important in rDNA procedures, catalyzes the formation of:
| 1. | N- Glycosidic | 2. | Hydrogen |
| 3. | Phosphodiester | 4. | Ester |
Subtopic: Â General Design of an rDNA experiment |
 63%
Level 2: 60%+
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A danger of genetic engineering is that the genetically modified bacterium can escape the lab and infect humans. This possibility is prevented by:
| 1. | selecting a mutant form of the bacteria |
| 2. | selecting a live attenuated bacterium |
| 3. | application of stringent asepsis in the lab |
| 4. | prophylactically immunizing the persons working in the lab |
Subtopic: Â General Design of an rDNA experiment |
 58%
Level 3: 35%-60%
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- 1(current)
Q. No.
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