Recombinant DNA
Which of the following enzyme is used to covalently bond foreign DNA to a vector plasmid?

Restriction endonuclease
DNA helicase
DNA polymerase
DNA ligase

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Recombinant DNA
Electroporation is

the process of separating charged molecules through a gel maintained in an electric field
the process of combining foreign DNA to an electrically charged vector molecule
the application of high voltage pulses
the process of multiplication of the cells

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Recombinant DNA
The advantage of using DNA polymerases from thermophilic organisms in PCR is that

All of these
the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands
the DNA polymerases of these bacteria never make mistakes while replicating DNA
the DNA polymerases of these bacteria are much faster than those from other organisms

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