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Multiple Choice
Which electron carriers are produced during the citric acid cycle?
A
NADPH and ATP
B
NADH and FADH2
C
CoA and GTP
D
NAD+ and FAD
Verified step by step guidance
1
Understand the role of the citric acid cycle: The citric acid cycle, also known as the Krebs cycle, is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
Identify the main products of the citric acid cycle: The cycle produces high-energy electron carriers that are crucial for the electron transport chain, which ultimately leads to ATP production.
Recognize the electron carriers involved: During the citric acid cycle, NAD+ is reduced to NADH and FAD is reduced to FADH2. These molecules carry electrons to the electron transport chain.
Differentiate between NADH and NADPH: NADH is primarily involved in catabolic reactions, such as the citric acid cycle, while NADPH is used in anabolic reactions, such as fatty acid synthesis.
Conclude with the correct electron carriers: The electron carriers produced during the citric acid cycle are NADH and FADH2, which are essential for the subsequent production of ATP in the electron transport chain.