Growing bacteria that degrade an environmental pollutant,which is also toxic to the cells at artificially high concentrations,might require ________ to obtain a sufficient population for biochemistry studies.
A) a continuous batch culture
B) a second growth substrate to keep the culture in exponential growth phase
C) steady state growth kinetics
D) the use of a chemostat

Question

Quizplus · Accepted Answer

The use of a chemostat can maintain a constant population size by controlling the rate of nutrient supply and removal of waste products. This allows for the growth of bacteria in a controlled environment where the pollutant concentration can be maintained at a steady, but non-toxic level, allowing for proper biochemistry studies. A continuous batch culture (A) would not be suitable for maintaining a constant population size, and adding a second growth substrate (B) may not address the toxicity issue. Steady state growth kinetics (C) is a concept but not an applicable method to address this question.

Growing Bacteria That Degrade an Environmental Pollutant,which Is Also Toxic