Most bacteria derive their carbon and energy needs from organic molecules and ar

Question

Most bacteria derive their carbon and energy needs from organic molecules and are classified as a. chemolithotrophs. b. chemoorganotrophs. c. photoautotrophs. d. photoheterotrophs. The cyanobacteria use solar energy to fix carbon dioxide. They are classified as a. chemolithotrophs. b. chemoorganotrophs. c. photoautotrophs. d. photoheterotrophs. Rhizobium and Azotobacter are examples of nitrogen-fixing soil bacteria that are classified as a. chcmolithotrophs. b. chemoorganotrophs. c. photoautotrophs. d. photoheterotrophs. Some purple nonsulfur bacteria utilize solar energy but require an organic carbon source. They are classified as a. chemolithotrophs. b. chemoorganotrophs. c. photoautotrophs. d. photoheterotrophs.

Explanation / Answer

B Chemoorganotrophs are organisms which oxidize the chemical bonds in organic compounds as their energy source. C. Photoautotrophs as they used sunlight to fix carbon dioxide B. Chemoorganotroph is the mode of nutrition by Azotobacter C photoautotrophs Purple non sulfur bacteria utilize solar energy but require an organic carbon source and are classified as photoautotrophs

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