How do scientists use recombinant dna technology to produce the drug insulin?

First, scientists isolate the gene that controls insulin production. Then, they take that gene and insert into a plasmid (a circular ring of DNA found in bacteria). When the bacterium with that plasmid reproduces, it carries that insulin-producing gene. Then they can either mass-reproduce that bacteria or transfer the plasmid to another rapidly-reproducing bacteria. After some time, they harvest the insulin from the bacteria.

The salt in the sea water dehydrated the sailor because her body could not take in the amount to salt in the sea water