Part V. Carbon and Nitrogen Fixation 4 points a. How does a chemolithoautotroph obtain reduced carbon? (1 point) b. Is autotrophy a catabolic or anabolic process? Explain your reasoning. (1 point) c. What enzymes are required for carbon and nitrogen fixation? Imagine an organism fixes both carbon and nitrogen. Propose a single strategy that could be used to protect both enzymes from oxygen in a single bacterium. (2 points)
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These organisms can oxidize inorganic compounds such as hydrogen sulfide, ammonia, or ferrous iron, and use the energy released from these reactions to fix carbon dioxide into organic molecules. Show more…
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