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If an bacterium uses a chemical as its energy source, an organic compound as its C...

If an bacterium uses a chemical as its energy source, an organic compound as its C source, and uses an organic compound as its final electron acceptor, it would be a(n):
a) chemoheterotroph; aerobic bacterium
b) chemoheterotroph; anaerobic bacterium
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Answer #1

Since the bacterium is using a chemical as a source of energy, it is Chemo, the bacterium is not using atmospheric CO2 as a plant, it is hetero. The terminal electron acceptor is not oxygen as in the case of aerobic respiration, the bacteria is an anaerobe. The terminal electron acceptor may be any organic molecule like DMSO or an inorganic molecule like nitrate.

So option 2 (chemoheterotroph: anaerobic bacterium) is correct.

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