Articles > Quizzes & Surveys > Facultative anaerobe – definition Facultative anaerobe – definition Quiz Choose the best answer. 1. What is a facultative anaerobe? An organism that cannot survive in the absence of oxygen An organism that requires oxygen for respiration An organism that may or may not require oxygen to produce ATP 2. The process of producing energy by using light energy Anaerobic respiration Aerobic respiration Photosynthesis 3. Location of cell respiration in facultative anaerobe bacteria Mitochondria Cytoplasm Nucleus 4. Nitrate serves as the electron acceptor in the electron transport chain Fumarate respiration Nitrate respiration Sulfur respiration 5. Which of the following is a facultative anaerobe? Escherichia coli Clostridium Fusobacterium Send Your Results (Optional) Your Name To Email Time is Up!