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Questions and Answers
Metal resistance in bacteria is usually determined by genes carried on chromosomes.
False
Siderophores are high molecular-weight chelating agents with a low affinity for ferric iron.
False
Biosurfactants are produced by microorganisms under high iron conditions.
False
Biotransformation of metals can convert less toxic metals into more toxic metals.
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An increase in environmental pH increases metals solubility.
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Dimorphism is not affected by environmental pH.
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Microorganisms can produce extracellular polymeric substances (EPS) to increase metal bioavailability.
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Biosurfactants are not useful for bioremediation of heavy metal contaminated soil.
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Nitrification is enhanced by a decrease in environmental pH.
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Microbial processes in the environment, such as biodegradation of organic pollution, are enhanced by a decrease in environmental pH.
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