The correct option is D Escherichia
Insulin hormone
Insulin is a peptide hormone produced by beta cells of the islet of langerhans present in the pancreas. It regulates the blood glucose levels by enhancing the uptake of glucose into the cells.
Production of recombinant insulin
Recombinant insulin is produced in Escherichia coli. It is produced by cloning genes of human A and B peptides of insulin separately in different E.coli bacteria. In the end, disulfide bonds are created in between both the peptides to form functional insulin
Final answer
(D) Escherichia