Multiple Choice
In a typical eukaryotic cell, where does the citric acid (Krebs) cycle primarily occur?
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11. Aerobic Respiration
Citric Acid Cycle
Multiple Choice
For each acetyl CoA that is oxidized in the citric acid cycle, what is created?
A
1 GTP, 3 NADH, and 1 FAHD2
B
2 GTP, 1 NADH, and 3 FAHD2
C
6 GTP, 2 NADH, and 1 FAHD2
D
1 GTP, 1 NADH, and 1 FAHD2
Verified step by step guidance1
Understand the role of acetyl CoA in the citric acid cycle: Acetyl CoA is the starting molecule that enters the citric acid cycle, also known as the Krebs cycle, which is a series of chemical reactions used by all aerobic organisms to generate energy.
Identify the main products of one turn of the citric acid cycle: For each acetyl CoA molecule that enters the cycle, the main products are 3 NADH, 1 FADH2, and 1 GTP (or ATP, depending on the cell type).
Recall the function of NADH and FADH2: These molecules are electron carriers that store energy used to produce ATP in the electron transport chain.
Consider the role of GTP: GTP is a high-energy molecule similar to ATP and can be readily converted to ATP in the cell, providing energy for cellular processes.
Match the products with the given options: Compare the known products of the citric acid cycle with the options provided to determine the correct answer.
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