How Did Sergei Winogradsky Grow Lithotrophs

Question

How did Sergei Winogradsky grow lithotrophs?
A) enrichment culture
B) organic media
C) pure culture
D) endosymbiosis
E) chain of infection

Accepted Answer

Sergei Winogradsky grew lithotrophs using an enrichment culture technique. This involves placing the bacteria in a selective growth medium that encourages the growth of only the desired microbes without interference from other organisms. In Winogradsky's case, he used a medium containing sulfur compounds, which was conducive to the growth of lithotrophs that use inorganic compounds as their energy source.