A genomic library is a collection of: A. plasmid fragments that are spliced into

Question

A genomic library is a collection of: A. plasmid fragments that are spliced into DNA. B. DNA fragments that are spliced into plasmids. C. intron fragments that are spliced into plasmids. D. exon fragments that are spliced into bacterial cells. E. gene fragments that are spliced into main bacterial chromosome What purpose do restriction enzymes play in bacterial cells? A. Restriction enzymes prevent the overproduction of mRNA in the bacterial cell. B. Restriction enzymes attack bacteriophage DNA when it enters the cell. C. Restriction enzymes promote bonding of the RNA polymerase to the promoter. D. Restriction enzymes limit the rate of bacterial replication. E. Restriction enzymes connect Okazaki fragments

Explanation / Answer

Answers :-

1.option 'B'-DNA fragments that are spliced into plasmid

Explanation :A genomic library is a collection of the total genomic DNA from a single organism. The DNA is stored in a population of identical vectors, each containing a different insert of DNA.

2.option -'B'-Restriction enzymes attack bacteriophage DNA when it enters the bacterial cell.

Explanation :A restriction enzyme is an enzyme that cuts DNA after recognizing a specific sequence of DNA. restriction enzymes acts as molecular scissors.

Scientists can use restriction enzymes to cut a single gene from a larger piece of DNA.

Restriction enzymes evolved in bacteria as a part of protection from bacteriophage.

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