The Kreb Cycle And Electron Transport Chain

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| By Jakewallach
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The Kreb Cycle And Electron Transport Chain - Quiz

In this quiz, you will be tested on the mechanics of the Krebs cycle and the electron transport chain.


Questions and Answers
  • 1. 

    The Krebs cycle is aerobic which means what?

    • A.

      It requires no oxygen

    • B.

      It requires water

    • C.

      It requires oxygen

    • D.

      It releases carbon dioxide

    Correct Answer
    C. It requires oxygen
    Explanation
    Unlike glycolysis, the Krebs cycle does require oxygen as well as several of the products that are created in the first steps of photosynthesis.

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  • 2. 

    In the Kreb cycle, which four items go in to the cycle and what four items come out?

    • A.

      CO2, NADH, FADH2 and ATP go in to create Pyruvate, ADP, NAD and FAD.

    • B.

      Pyruvate, ADP, NAD and FAD go in to create CO2, NADH, FADH2 and ATP.

    • C.

      H2O, Pyruvate, ADP and FADH go in to create O2, FADH2, ATP and NAD

    • D.

      NADH, ADP, FADH2 and CO2 go in to create Pyruvate, ATP, NAD and FAD

    • E.

      H2O, FAD, NAD and ADP go in to create O2, FADH2, ATP and NADH

    Correct Answer
    B. Pyruvate, ADP, NAD and FAD go in to create CO2, NADH, FADH2 and ATP.
    Explanation
    When pyruvate, NAD, ADP and FAD go into the Krebs cycle, CO2, ATP, NADH and FADH2 are produced.

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  • 3. 

    What four items go into the electron transport chain and what four items come out?

    • A.

      O2, NADH, FADH2 and ADP go in to produce H2O, NAD, FAD and ATP

    • B.

      Pyruvate, ADP, NAD and FAD go in to produce CO2, NADH, FADH2 and ATP.

    • C.

      ATP, Pyruvate, FADH2 and NADH go in to produce ADP, H2O, NADH and FADH2

    • D.

      H2O, Pyruvate, ADP and FADH go in to produce O2, FADH2, ATP and NAD

    • E.

      NADH, ADP, FADH2 and CO2 go in to produce Pyruvate, ATP, NAD and FAD

    Correct Answer
    A. O2, NADH, FADH2 and ADP go in to produce H2O, NAD, FAD and ATP
    Explanation
    When O2, NADH, FADH2 and ADP go into the electron transport chain, H2O, NAD, FAD and ATP are produced

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  • 4. 

    As the pyruvic acid enters the mitochondria, it changes into what?

    • A.

      Citric acid

    • B.

      Succinic Acid

    • C.

      Ketoglutaric acid

    • D.

      Acetic acid

    Correct Answer
    D. Acetic acid
    Explanation
    As the pyruvic acid enters the mitochondria, it releases a molecule of CO2 transforming it into acetic acid.

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  • 5. 

    What process occurs in the mitochondria membrane?

    • A.

      The Kreb cycle

    • B.

      The electron transport chain

    • C.

      Spectrum

    Correct Answer
    B. The electron transport chain
    Explanation
    Although the electron transport chain uses many of the products created in the Krebs cycle, they do not occur in the same place. The Krebs cycle occurs in the mitochondria and the electron transport occurs in the mitochondria membrane.

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  • Current Version
  • May 01, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • May 15, 2010
    Quiz Created by
    Jakewallach
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