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Question

Bacteria obtaining energy from oxidation of inorganic substances are called

A
Chemolithotrophs
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B
Photolithotrophs
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C
Photo-organotrophs
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D
Chemoorganotrophs
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Solution

The correct option is A Chemolithotrophs
Chemolithotrophy is the gain of energy for cellular functions from the oxidation of inorganic compounds in the absence of light. The organisms which synthesizes food by the process of chemolithotrophy are known as chemolithotrophs. They use electron donors and channel electrons in their respiratory chains to synthesise ATP. Thus the correct answer is option A.

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