Bacteria containing plasmid vectors are often identified by which process?
a) producing antibodies specific for bacteria that contain plasmids.
b) exposing the bacteria to an antibiotic that kills cells lacking the plasmid
c) using radioactive probes to locate the plasmids
d) removing the dna of all cells in a culture to see which cells have plasmids
e) microscopic examination of the cells

Option B, exposing the bacteria to an antibiotic that kills cells lacking the plasmid

Explanation:

Bacteria that have plasmid are selected from the ones that do not plasmid by placing them on antibiotics plates. As the bacteria that have plasmid within it will possess an antibiotic resistant gene due to which they are able to survive on the antibiotics plate and form colonies. While the bacteria that do not have plasmid die. These colonies of plasmid bacteria’s are grown to make large cultures from which plasmid protein is derived.  

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.