Recombinant DNA
What is the normal role of restriction endonucleases in bacterial cells?

To degrade invading phage DNA
To produce RNA primers for replication
To degrade the bacterial chromosome into small pieces during replication
All of these

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Recombinant DNA
Agrobacterium tumefaciens is

a fungi that is used to produce antibiotics in large amounts
a bacterium that can be used to introduce DNA into plants
a disease in humans that causes loss of weight
a disease in humans that causes loss of sight

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Recombinant DNA
A genomic library is

a database where the sequence of an organism's genome is stored
a place where the information of the genetic organization of organisms are kept.
a book that describes how to isolate DNA from a particular organism
a collection of many clones possessing different DNA fragments from the same organisms bound to vectors

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Recombinant DNA
The Southern blotting technique depends on

similarities between the sequences of probe protein and experimental protein
the molecular mass of proteins
similarities between the sequences of probe DNA and experimental DNA
similarities between the sequences of probe RNA and experimental RNA

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

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

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