Facultative anaerobic bacteria can grow in the presence or absence of oxygen. They generally use aerobic respiration when oxygen is available but can switch to fermentation or anaerobic respiration when oxygen is unavailable, giving them flexibility across different environmental conditions.
Bacteria that can grow in both the presence or absence of air are known as:
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Question context
This question is part of 🦠 Microbiology within the broader 🧬 Medical Science subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.