High Salt Concentrations Limit the Growth of Microbes Adapted to Freshwater

question 12

Multiple Choice

High salt concentrations limit the growth of microbes adapted to freshwater conditions because

• A) salt prevents microbes from using oxygen as an electron acceptor during aerobic cellular respiration.
• B) high salt concentrations increase the temperature of the environment above the range at which most microbes can survive.
• C) freshwater is a hypotonic solution and microbes living in freshwater do not have a need for mechanisms to reduce water loss.
• D) a high salt concentration leads to a sharp decline in the pH of the environment.

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