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Which of the following resistance in bacteria is usually found in heavy metal contaminated sites?

(a) Mercury

(b) Copper

(c) Nickle

(d) Magnesium

I got this question in unit test.

This intriguing question originated from Genetic Aspects of Heavy Metal Resistance topic in division Microbial Transformation of Heavy Metals of Environmental Biotechnology

1 Answer

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Right choice is (a) Mercury

The best I can explain: Mercury resistance in bacteria is usually found in metal contaminated sites. It is usually found in bacteria like in gram positive and negative and is related to plasmid. Whereas, Copper, Nickle and Magnesium resistance are usually not found in metal contaminated sites in bacteria.

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