Homework SourseWhich of the following metabolic processes can be used exclu
Which of the following metabolic processes can be used exclusively by microorganisms to conserve energy? Select only one answer.
| A) oxygenic photosynthsis, sulfate reduction, sulfide oxidation |
| B) ammonia assimilation, urea mineralization, methanogenesis |
| C) nitrification, denitrification, CO2 fixation |
| D) methanogenesis, denitrification, sulfide oxidation |
| E) CO2 fixation, nitrogen fixation, ammonia assimilation |
Solution
Answer: C) nitrification, denitrification, CO2 fixation
Reason:
The metabolic processes can be used exclusively by microorganisms to conserve energy in terms of anaerobic respiration is through \"denitrification\", in which ATP synthesis occurs by delivering electrons to nitrate (electron acceptor). The other process of anaerobic process is used by lithotrophs to synthesize energy is via \"carbon dioxide fixation (in which CO2 is acts as electron acceptor)\". The nitrifying bacteria are known as chemolithotrophs meticulously conserve energy by converting f NH3 to NO3.
