Aerobic
Definition
Aerobic refers to processes or organisms that require oxygen to survive and grow. In prokaryotes, aerobic respiration is a key metabolic pathway for energy production.
5 Must Know Facts For Your Next Test
- Aerobic respiration in prokaryotes involves the electron transport chain and produces more ATP compared to anaerobic processes.
- Most aerobic bacteria use oxygen as the final electron acceptor in their respiratory chain.
- Some archaea are also capable of aerobic metabolism, utilizing unique enzymes adapted to extreme environments.
- Aerobic conditions can influence the growth rate and ecological niche of bacteria and archaea.
- Obligate aerobes cannot survive without oxygen, whereas facultative aerobes can switch between aerobic and anaerobic metabolism.
Review Questions
- What role does oxygen play in aerobic respiration in prokaryotes?
- How do obligate aerobes differ from facultative aerobes?
- Why is aerobic respiration more efficient in terms of ATP production compared to anaerobic pathways?
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Related terms
Anaerobic: Processes or organisms that do not require oxygen for survival and may even die in its presence.
Facultative Anaerobe: Organisms that can switch between aerobic and anaerobic metabolism depending on oxygen availability.
Obligate Aerobe: Organisms that require oxygen for survival and cannot undergo anaerobic metabolism.
