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For chemical thermodynamic reasons that have nothing to do with biological issues, only certain energy source-TEA...

For chemical thermodynamic reasons that have nothing to do with biological issues, only certain energy source-TEA reactions can be used to obtain energy. Which of the following energy source-TEA combinations is NOT used by any prokaryote to obtain energy?

A. Molecular hydrogen-carbon dioxide

B. Hydrogen sulfide- molecular oxygen

C. Ferric iron-nitrate

D. Ammonium-nitrit

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Answer #1

A. Molecular hydrogen-oxygen,

Prokaryotes do not have mitochondria to carry out aerobic respiration. That's why oxygen cannot be used as TEA.

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