Bacteria containing recombinant plasmids are often identified by which process?A) examining the cells with an electron microscop
eB) using radioactive tracers to locate the plasmidsC) exposing the bacteria to an antibiotic that kills cells lacking the resistant plasmidD) removing the DNA of all cells in a culture to see which cells have plasmidsE) producing antibodies specific for each bacterium containing a recombinant plasmid
The correct answer is: C) exposing the bacteria to an antibiotic that kills cells lacking the resistant plasmid
The plasmids are inserted into bacteria by the process called transformation. Bacteria need to be treated, for example with heat, in order to take up foreign DNA (recombinant plasmid). A inserted recombinant plasmid contains an antibiotic resistance gene, which allows bacteria to survive in the presence of a specific antibiotic. So, this fact is used for the selection of bacteria that are and are not transformed.
Protein describes any of the numerous large, complex naturally-produced molecules made up of one or more long chains of amino acids, in which the amino acid groups are held together by peptide bonds.
