| 6. | The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as |
| a. | laser |
| b. | DNA probe |
| c. | gene gun |
| d. | inoculating needle |
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Answer: (c).gene gun
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| 7. | An animal, that has gained new genetic information from the acquisition of foreign DNA, is considered as |
| a. | a chimera |
| b. | a transgenic animal |
| c. | a vector |
| d. | an enzyme that links DNA molecules |
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Answer: (b).a transgenic animal
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| 8. | The advantage of using DNA polymerases from thermophilic organisms in PCR is that |
| a. | the DNA polymerases of these bacteria are much faster than those from other organisms |
| b. | the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands |
| c. | the DNA polymerases of these bacteria never make mistakes while replicating DNA |
| d. | all of the above |
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Answer: (b).the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands
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| 9. | Which of the following is not commonly used as vector? |
| a. | Artificial chromosome |
| b. | Cosmid |
| c. | Fungi |
| d. | Plasmid |
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Answer: (c).Fungi
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| 10. | A short molecule containing 2-20 nucleotide is |
| a. | plasmid |
| b. | vector |
| c. | oligonucleotide |
| d. | mononucleotide |
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Answer: (c).oligonucleotide
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