The presence of genes encoding RubisCO enzymes in Methanocaldococcus jannaschii and a species of Pyrococcus indicates that the organisms
A. incorporate carbon dioxide via the acetyl-CoA pathway.
B. incorporate carbon dioxide via the Calvin cycle.
C. incorporate carbon dioxide via the reverse citric acid cycle.
D. utilize molecular hydrogen as an electron donor in chemolithotrophic metabolism.
Answer:B
The presence of genes encoding RubisCO enzymes in Methanocaldococcus jannaschii and a species of Pyrococcus indicates that the organisms
A. incorporate carbon dioxide via the acetyl-CoA pathway. B. incorporate carbon dioxide via the Calvin cycle. C. incorporate carbon dioxide via the reverse citric acid cycle. D. utilize molecular hydrogen as an electron donor in chemolithotrophic metabolism.