Question

why did scientists insert the gene for human insulin into bacteria?
a to eventually insert the bacteria into humans
b to prevent bacterial resistance
c to make bacteria more human
d to produce insulin needed to treat diabetes

Explanation:

Scientists insert the human insulin gene into bacteria (a process related to genetic engineering in Biology) to utilize bacteria's rapid reproduction to produce large amounts of insulin. This insulin is used to treat diabetes. Option a is illogical as bacteria aren't inserted into humans for this. Option b is incorrect as this process isn't for preventing bacterial resistance. Option c is nonsensical as bacteria can't be made "more human".

Answer:

d. To produce insulin needed to treat diabetes