An Organic Solvent Widely Used in Industrial Processes, 1,1,1-Trichloroethane (TCA)

Multiple Choice

An organic solvent widely used in industrial processes, 1,1,1-trichloroethane (TCA) , is a major environmental pollutant affecting human health and damaging the ozone layer. Recently, researchers isolated the first bacteria able to degrade TCA. They found that the bacteria use hydrogen as an electron donor, TCA as an electron acceptor, and acetate as a carbon source. Based on the preceding information, deduce the method used to isolate these bacteria.

A) Gram staining
B) enrichment culture
C) direct sequencing
D) seeding