Krebs Cycle Exploration
A Grade 10 science worksheet focusing on the Krebs Cycle, its stages, inputs, and outputs.
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Krebs Cycle Exploration
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Read each question carefully and answer to the best of your ability. This worksheet covers the key aspects of the Krebs Cycle.
1. Where in the cell does the Krebs cycle primarily occur?
Cytoplasm
Outer mitochondrial membrane
Mitochondrial matrix
Inner mitochondrial membrane
2. What molecule enters the Krebs cycle after glycolysis and pyruvate oxidation?
Glucose
Pyruvate
Acetyl-CoA
Lactic Acid
3. The Krebs cycle is also known as the cycle.
4. For each molecule of acetyl-CoA that enters the Krebs cycle, molecules of CO2 are released.
5. Briefly explain the main purpose of the Krebs cycle in cellular respiration.
6. The Krebs cycle directly produces a large amount of ATP.
True
False
7. NADH and FADH2 are important products of the Krebs cycle that carry electrons to the electron transport chain.
True
False
Match each term on the left with its description on the right.
8. Oxaloacetate
a. Six-carbon molecule formed when acetyl-CoA combines with oxaloacetate
9. Citrate
b. Four-carbon molecule that combines with acetyl-CoA to start the cycle
10. ATP
c. Energy currency of the cell, directly produced in small amounts during the Krebs cycle
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