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20 March, 01:09

Both Beggiatoa and the purple sulfur bacteria use H2S. These bacteria differ in that Beggiatoa A) Uses H2S for an energy source. B) Uses H2S for a carbon source. C) Uses light energy. D) Belongs to the gammaproteobacteria. E) Is a heterotroph.

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  1. 20 March, 02:41
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    The right answer is A) Uses H2S for an energy source.

    Beggiatoa is a bacterium that lives in sulphide-rich environments. They use H2S as a source of energy.

    Purple sulfur bacteria, are also bacteria that depend on the presence of H2S but do not use it for the purpose of producing energy. They use it as the ultimate electron acceptor in its respiratory chain (instead of oxygen), since they are anaerobic bacteria.
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