Rhodopseudomonas palustrus may be the most metabolically flexible bacterium known. R. palustrus shifts its metabolism as shown in the schematic below depending on the resources available in the environment. Which of the following statements is correct? Is O2 present? Yes Respiration (chemoorganotrophy; O2 inhibits bacteriochlorophyll oxidative phosphorylation) synthesis No Chemoorganotrophy (fermentation) No Is light present? Yes Is organic carbon present? Yes Photoheterotrophy No Photoautotrophy (malate, acetate preferred C sources) H₂, H₂S used as e donors OR. palustrus cannot use organic compounds as its source of carbon. OR. palustrus uses water as its source of electrons during photoautotrophy. O R. palustrus does not use an electron transport chain for respiration. OR. palustrus is a facultative anaerobe.
Rhodopseudomonas palustrus may be the most metabolically flexible bacterium known. R. palustrus shifts its metabolism as shown in the schematic below depending on the resources available in the environment. Which of the following statements is correct? Is O2 present? Yes Respiration (chemoorganotrophy; O2 inhibits bacteriochlorophyll oxidative phosphorylation) synthesis No Chemoorganotrophy (fermentation) No Is light present? Yes Is organic carbon present? Yes Photoheterotrophy No Photoautotrophy (malate, acetate preferred C sources) H₂, H₂S used as e donors OR. palustrus cannot use organic compounds as its source of carbon. OR. palustrus uses water as its source of electrons during photoautotrophy. O R. palustrus does not use an electron transport chain for respiration. OR. palustrus is a facultative anaerobe.
Biochemistry
6th Edition
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Reginald H. Garrett, Charles M. Grisham
Chapter17: Metabolism: An Overview
Section: Chapter Questions
Problem 18P
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