Here is question 4 with the answer: Colon bacteria that produce H2S produce actu
ID: 280161 • Letter: H
Question
Here is question 4 with the answer: Colon bacteria that produce H2S produce actually do so by using anaerobic respiration pathway.
Please answer question 11-14, thank you!
11. Some other colon prokaryotes are able to generate methane (CH4) using a different metabolic pathway than the one you identified in Question #4. These prokaryotes can use which of the following metabolic pathways?
a. aerobic respiration
b. anaerobic respiration
c. photosynthesis
d. autotrophic methanogenesis
12. The carbon source for methane (CH4) production using the metabolic pathway identified in Question #11 is:
a. hydrogen gas (H2)
b. elemental sulfur (S)
c. carbon dioxide (CO2)
d. glucose (C6H12O6)
13. The electron donor for methane (CH4) production using the metabolic pathway identified in Question #11 is ____(hydrogen gas/elemental sulfur/carbon dioxide/glucose), which is an ____(organic or inorganic) molecule that is in a fully ____(oxidized or reduced) state in its role as an electron donor.
14. The final electron acceptor for methane (CH4) production using the metabolic pathway identified in Question #11 is:
a. glucose (C6H12O6)
b. carbon dioxide (CO2)
c. elemental sulfur (S)
d. hydrogen gas (H2)
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Explanation / Answer
11. d. autotrophic methanogenesis.
12. c. carbon dioxide (CO2).
13. hydrogen gas, inorganic, reduced.
14. d. hydrogen gas (H2).