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Question

Which of the following bacteria grow on isopropyl alcohol and convert into acetone?

A
Fermentative bacteria
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B
Chemosynthetic bacteria
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C
Photosynthetic purple non-sulphur bacteria
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D
Nitrifying bacteria
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Solution

The correct option is C Photosynthetic purple non-sulphur bacteria
Purple non-sulphur photosynthetic bacteria contain bacteriochlorophyll to carry out photosynthesis along with purple pigment. They are able to use H2 and other simple organic compounds such alcohols and organic acids as e-donors. One such compound is isopropyl alcohol. Hence, answer C is correct.

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