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Questions and Answers
What advantage does the aerobic oxidation of nutrients provide to aerobic organisms?
What advantage does the aerobic oxidation of nutrients provide to aerobic organisms?
- It produces fewer toxic metabolites than fermentation
- It does not require the use of enzymes or antioxidant molecules
- It requires less oxygen than fermentation
- It yields a substantially greater amount of energy than fermentation (correct)
Why are toxic metabolites formed due to the use of oxygen by aerobic organisms?
Why are toxic metabolites formed due to the use of oxygen by aerobic organisms?
- Because oxygen is a highly reactive molecule (correct)
- Because oxygen can only be used in abnormally stressful conditions
- Because oxygen is not found almost everywhere on the Earth's surface
- Because oxygen diffuses easily across cell membranes
Which condition can overwhelm an organism's antioxidant mechanisms?
Which condition can overwhelm an organism's antioxidant mechanisms?
- Use of charged species like sulfate and nitrate
- Normal functioning of the organism
- Abnormally stressful conditions (correct)
- Absence of oxygen
What are known to be caused in part by oxygen metabolites?
What are known to be caused in part by oxygen metabolites?
What property of oxygen allows for a highly favorable mechanism for extracting energy from organic molecules?
What property of oxygen allows for a highly favorable mechanism for extracting energy from organic molecules?
Why does the aerobic oxidation of nutrients yield a substantially greater amount of energy than fermentation?
Why does the aerobic oxidation of nutrients yield a substantially greater amount of energy than fermentation?
Where does the electron transport chain take place in eukaryotic cells?
Where does the electron transport chain take place in eukaryotic cells?
What is the main function of the electron transport chain?
What is the main function of the electron transport chain?
Which electron transport complex transfers electrons from NADH to coenzyme Q?
Which electron transport complex transfers electrons from NADH to coenzyme Q?
What is the primary role of oxygen in the electron transport chain?
What is the primary role of oxygen in the electron transport chain?
Which organisms are relatively simple in structure and occupy only isolated ecological niches due to their energy generation method?
Which organisms are relatively simple in structure and occupy only isolated ecological niches due to their energy generation method?
What is the effect of each sequential redox reaction in the electron transport chain?
What is the effect of each sequential redox reaction in the electron transport chain?
What is the source of electrons for the electron transport chain?
What is the source of electrons for the electron transport chain?
Which molecule acts as the terminal acceptor of electrons extracted from fuel molecules in aerobic eukaryotic cells?
Which molecule acts as the terminal acceptor of electrons extracted from fuel molecules in aerobic eukaryotic cells?
What is responsible for another property of oxygen, its tendency to form highly destructive metabolites?
What is responsible for another property of oxygen, its tendency to form highly destructive metabolites?
What do aerobic organisms use as the terminal acceptor of the electrons extracted from fuel molecules?
What do aerobic organisms use as the terminal acceptor of the electrons extracted from fuel molecules?
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