18 Questions
Which of the following is the primary function of the electron transport chain in aerobic respiration?
To reduce oxygen to water as the terminal electron acceptor
In anaerobic respiration, which of the following molecules can act as the terminal electron acceptor instead of oxygen?
Nitrate, iron, or sulfate
Which of the following statements about the Krebs cycle is correct?
It occurs in the mitochondrial matrix and is a crucial part of aerobic respiration
What is the primary difference between aerobic and anaerobic respiration in terms of ATP production?
Aerobic respiration produces more ATP than anaerobic respiration
Which of the following is the primary purpose of the FADH2 produced during the Krebs cycle?
To be oxidized in the electron transport chain and contribute to ATP production
In anaerobic respiration, what is the primary purpose of the terminal electron acceptor?
To regenerate NAD+ so that glycolysis can continue
What is the total theoretical ATP yield from one glucose molecule in aerobic respiration for a prokaryotic cell?
38 ATP
How many ATP molecules are generated for each FADH2 molecule in aerobic respiration?
2 ATP
Where does the Krebs Cycle occur in a eukaryotic cell?
Mitochondrial matrix
During aerobic respiration, what is the alternative final electron acceptor if oxygen is not available?
An inorganic molecule
How many NADH molecules are produced from the TCA cycle for one molecule of glucose?
8 NADH
What is the net ATP yield from glycolysis for a prokaryotic cell in aerobic respiration?
2 ATP
Which of the following is true about the Krebs cycle (TCA cycle)?
It produces 3 NADH and 1 FADH2 molecules per turn of the cycle.
What is the primary role of the electron transport chain in aerobic respiration?
To transfer electrons from NADH and FADH2 to molecular oxygen, generating a proton gradient.
During anaerobic respiration, what is the final electron acceptor?
Ethanol or lactic acid
What is the primary function of FADH2 in aerobic respiration?
To transfer electrons to the electron transport chain, generating a proton gradient.
Which of the following statements about ATP production in aerobic respiration is correct?
The majority of ATP is generated by the chemiosmotic process coupled to the electron transport chain.
What is the primary role of NADH in aerobic respiration?
To transfer electrons from glycolysis to the electron transport chain.
Test your knowledge on the electron transport chain in respiration, including the differences between aerobic and anaerobic respiration. Learn about the roles of oxygen and other terminal electron acceptors in these processes.
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