Facultative anaerobes differ from aerotolerant anaerobes in that ________.
A. facultative anaerobes synthesize both superoxide dismutase and catalase for protection against reactive oxygen species (ROS), whereas aerotolerant anaerobes synthesize superoxide dismutase only, allowing survival in the presence of ROS, but they do not utilize O2 in their metabolic pathways
B. aerotolerant anaerobes synthesize both superoxide dismutase and catalase for protection against reactive oxygen species (ROS), whereas facultative anaerobes synthesize superoxide dismutase only, allowing survival in the presence of ROS, but they do not utilize O2 in their metabolic pathways
C. facultative anaerobes synthesize neither superoxide dismutase nor catalase so they lack protection against reactive oxygen species (ROS), whereas aerotolerant anaerobes synthesize superoxide dismutase only, allowing survival in the presence of ROS, but they do not utilize O2 in their metabolic pathways
D. facultative anaerobes synthesize neither superoxide dismutase nor catalase so they lack protection against reactive oxygen species (ROS), whereas aerotolerant anaerobes synthesize both superoxide dismutase and catalase, allowing survival in the presence of ROS that form during respiration
Answer: A
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