Which of the following conditions would you use to enrich purple nonsulfur bacteria from lake sediments?
A) anoxic media with a good light source
B) mineral media with ammonia and oxygen in the dark
C) anoxic mineral media with an organic acid and a good light source
D) mineral media with nitrate and acetate in the dark

Question

Quizplus · Accepted Answer

Purple nonsulfur bacteria are photosynthetic and primarily grow in anoxic environments with a good light source. Therefore, option C, which provides anoxic mineral media with an organic acid and a good light source, is the best choice for enriching purple nonsulfur bacteria from lake sediments. Options A and B are not suitable because they lack the organic substrate necessary for the growth of these bacteria, and option D provides a different organic substrate than what purple nonsulfur bacteria typically use.

Which of the Following Conditions Would You Use to Enrich