Krebs Cycle Worksheet
A Grade 11 science worksheet covering the key stages, inputs, and outputs of the Krebs Cycle (Citric Acid Cycle).
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Krebs Cycle Worksheet
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Read each question carefully and provide your best answer. This worksheet assesses your understanding of the Krebs Cycle, also known as the Citric Acid Cycle.
1. Where does the Krebs Cycle primarily occur within a eukaryotic cell?
Cytoplasm
Mitochondrial matrix
Ribosome
Nucleus
2. What molecule enters the Krebs Cycle by combining with oxaloacetate?
Pyruvate
Glucose
Acetyl-CoA
Citrate
3. The Krebs Cycle is also known as the cycle.
4. For each molecule of Acetyl-CoA that enters the cycle, molecules of CO2 are released.
5. The primary electron carriers reduced during the Krebs Cycle are and .
6. The Krebs Cycle directly produces a large amount of ATP.
True
False
7. Oxygen is directly consumed during the Krebs Cycle.
True
False
8. Briefly explain the main purpose of the Krebs Cycle in cellular respiration.
9. List three key products generated per turn of the Krebs Cycle from one molecule of Acetyl-CoA, excluding CO2.
Match the molecule with its role in the Krebs Cycle.
10. Citrate
a. Final electron acceptor
11. Oxaloacetate
b. First product formed in the cycle
12. FADH2
c. Regenerated to continue the cycle
13. NADH
d. Electron carrier to ETC
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