Biology Chapter 7 Quiz

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  • 1/7 Questions

    CO2 is released during the Krebs Cycle

    • True
    • False
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About This Quiz

This Biology Chapter 7 Quiz assesses key concepts of cellular respiration. It covers stages like glycolysis, anaerobic respiration, and the Krebs Cycle, focusing on their products and processes. Essential for understanding energy production in cells, it's ideal for students enhancing their biology knowledge.

Cellular Respiration Quizzes & Trivia

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  • 2. 

    If there is little or no oxygen in the cell after glycolysis, _________ will take place

    • Anaerobic Respiration

    • Aerobic Respiration

    • The Krebs Cycle

    Correct Answer
    A. Anaerobic Respiration
    Explanation
    If there is little or no oxygen in the cell after glycolysis, anaerobic respiration will take place. Anaerobic respiration is a metabolic process that occurs in the absence of oxygen. It involves the breakdown of glucose into energy without the use of oxygen. This process produces lactic acid or ethanol as byproducts, depending on the organism. Anaerobic respiration is less efficient than aerobic respiration, but it allows cells to continue producing energy when oxygen is not available.

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  • 3. 

    Glycolysis is...

    • A biochemical pathway

    • The first step in cellular respiration

    • A process that yields a small amount of ATP

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Glycolysis is a biochemical pathway that occurs in the cytoplasm of cells. It is the first step in cellular respiration, which is the process by which cells convert glucose into usable energy. During glycolysis, glucose is broken down into two molecules of pyruvate, and a small amount of ATP is produced. Therefore, the correct answer is "All of the above" because glycolysis is indeed a biochemical pathway, the first step in cellular respiration, and it yields a small amount of ATP.

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  • 4. 

    Glycolysis makes...

    • A large amount of ATP

    • A small amount of ATP

    • No amount of ATP

    Correct Answer
    A. A small amount of ATP
    Explanation
    Glycolysis is the initial step in cellular respiration, where glucose is broken down into pyruvate. During glycolysis, a small amount of ATP is produced through substrate-level phosphorylation. This process involves the transfer of a phosphate group from a high-energy intermediate molecule to ADP, forming ATP. Although glycolysis is an essential metabolic pathway, it is not the primary source of ATP production in cells. The majority of ATP is generated through oxidative phosphorylation in the electron transport chain. Therefore, glycolysis only produces a small amount of ATP compared to the overall energy production in cellular respiration.

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  • 5. 

    Before the Krebs Cycle takes place, ______ needs to be made.

    • Glucose

    • Alcohol

    • ACetyl CoA

    Correct Answer
    A. ACetyl CoA
    Explanation
    Before the Krebs Cycle takes place, Acetyl CoA needs to be made. Acetyl CoA is a molecule that is formed from the breakdown of glucose during glycolysis. It is also formed from the breakdown of fatty acids during beta-oxidation. Acetyl CoA then enters the Krebs Cycle, where it undergoes a series of reactions to produce energy-rich molecules such as ATP. Therefore, the presence of Acetyl CoA is necessary for the Krebs Cycle to occur and for the production of energy in the cell.

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  • 6. 

    Pyruvic Acid is a product of...

    • The Krebs Cycle

    • Glycolysis

    • Lactic Acid Fermentation

    Correct Answer
    A. Glycolysis
    Explanation
    Pyruvic Acid is a product of glycolysis. Glycolysis is the initial step in the breakdown of glucose, where glucose is converted into two molecules of pyruvic acid. This process occurs in the cytoplasm of cells and does not require oxygen. Pyruvic acid is then further metabolized in the Krebs Cycle or can be converted into lactic acid through Lactic Acid Fermentation. Therefore, the correct answer is glycolysis.

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  • 7. 

    In eukaryotes, the ETC(Electron Transport Chain)  takes place along the cell membrane

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because in eukaryotes, the Electron Transport Chain (ETC) takes place along the inner mitochondrial membrane, not the cell membrane. The ETC is a series of protein complexes located in the inner mitochondrial membrane that transfer electrons and generate ATP during cellular respiration.

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  • Mar 21, 2023
    Quiz Edited by
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  • Dec 30, 2011
    Quiz Created by
    Tat20s
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