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Krebs Cycle Worksheet

A Grade 11 science worksheet covering the key stages, inputs, and outputs of the Krebs Cycle (Citric Acid Cycle).

Grade 11 Science BiologyKrebs Cycle
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Includes

Multiple ChoiceFill in the BlanksTrue / FalseShort AnswerMatching

Standards

HS-LS1-7

Topics

Krebs CycleBiologyCellular RespirationCitric Acid CycleATP
7 sections · Free to use · Printable
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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?

a

Cytoplasm

b

Mitochondrial matrix

c

Ribosome

d

Nucleus

2. What molecule enters the Krebs Cycle by combining with oxaloacetate?

a

Pyruvate

b

Glucose

c

Acetyl-CoA

d

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.

T

True

F

False

7. Oxygen is directly consumed during the Krebs Cycle.

T

True

F

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