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Multiple Choice
Which of the following processes generates most of the NADH that delivers electrons to the electron transport chain?
A
Oxidative phosphorylation
B
Substrate-level phosphorylation
C
Glycolysis
D
Anabolic pathways
E
The citric acid cycle
Verified step by step guidance
1
Understand that NADH is a crucial electron carrier in cellular respiration, which transports electrons to the electron transport chain.
Recognize that the citric acid cycle, also known as the Krebs cycle, is a key metabolic pathway that occurs in the mitochondria.
During the citric acid cycle, acetyl-CoA is oxidized, and in the process, NAD+ is reduced to NADH.
Identify that the citric acid cycle produces more NADH compared to glycolysis and other pathways, as it involves multiple steps where NAD+ is reduced to NADH.
Conclude that the citric acid cycle is the process that generates the most NADH, which is then used in the electron transport chain to produce ATP through oxidative phosphorylation.