2. Which two microbial processes are thought to utilize most of the carbon in se

Question

2. Which two microbial processes are thought to utilize most of the carbon in seafloor sediments? Circle the two that apply. (2 points) a) Oxygen respiration b) Methanogenesis c) Denitrification d) Sulfate reduction 3. Which microbial process is known to be performed only by archaea? (1 point) a) Oxygen respiration b) Methanogenesis c) Denitrification d) Sfate reduction 4. Which microbial process is the most energetically favorable under standard conditions? (1 pt) a) Oxygen respiration b) Methanogenesis c) Denitrification d) Sulfate reduction 5, which @free energy is yielding more energy for a microorganism, circle one. (1 point) a) -20 kJ mol-1 b) 40 kJ mol-1 c) 1kJ mol-1 d) 50 kl mol-1

Explanation / Answer

Ans 2 : a) oxygen respiration and b) methanogenesis

In the oxygen respiration , the organisms use oxygen for the oxidative breakdown of the complex carbon compounds into simpler compounds ,alongwith the release of substantial amount of energy.

The methanogenesis is the procedure of production of methane , i.e. CH4 , using carbon resources.

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