Which statement correctly describes a way that bacteria are used in biotechnology? A. Bacteria make human cells that make insulin. B. Human insulin coding bacterial genes are spliced into human cells. C. Human insulin made by bacteria is injected into humans. D. Bacteria that make insulin are implanted in humans.

Human insulin made by bacteria is injected into humans correctly describes a way that bacteria are used in biotechnology.

Option C

Explanation:

Human body do make insulin from the beta cells of islet of Langerhans. But in diseases like diabetes mellitus, there's decrease in the cell count of beta cells. Thus there's very less amount or no insulin. Thus excess insulin is required to be delivered from outside.

So bacteria are genetically engineered to produce human insulin. Insulin Aspert and Lisper are produced in this way. Thus the bacteria insulin are required for those individuals to survive and led a happy healthy life.