The considered possibility of the use yeast Saccharomyces cerevisiae as suitable test-object, allowing define the quality of water and her its solution. Certain need of the biological testing in ecological monitoring.
Pollution by oil has negative influence on all ecosystem of the sea. The main role in decomposing of hydrocarbons belongs to microorganisms. Influence emulsion and water repellencies of cellular walls of microorganisms on an oil destruction is noted.