Glycolysis Pathway Quiz

Reviewed by Zohra Sattar Waxali
Zohra Sattar Waxali, PhD (Chemistry) |
Chemistry
Review Board Member
Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products.
 , PhD (Chemistry)
By Jakewallach
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  • 1/10 Questions

    What is the end product of Glycolysis?

    • Pyruvate
    • Thiamine
    • Kinase
    • Carboxyl
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About This Quiz

Glycolysis converts glucose into two molecules with three carbons each and releases energy. This quiz on the mechanics of the Glycolysis pathway is aimed at gauging your knowledge about the topic and also at providing valuable knowledge that will ensure you master all the facts and concepts associated with it. This quiz will come in handy for a last-minute revision, so if you have an upcoming exam and want to prepare for this topic, go no further. All the best!

Glycolysis Pathway Quiz - Quiz

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  • 2. 

    What is the overall end product of the process of glycolysis?

    • Two extra ATP

    • Oxygen

    • Two extra PGAL molecules

    • Extra ADP

    Correct Answer
    A. Two extra ATP
    Explanation
     At the end of the glycolysis process, two additional ATP molecules are created along with two pyruvates. The ADP and PGAL are used in the process but are not end products.

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  • 3. 

    Where does glycolysis take place?

    • The mitochondria

    • The chloroplast

    • The cytoplasm

    • The stroma

    Correct Answer
    A. The cytoplasm
    Explanation
    Since the process of glycolysis is primitive, it does not require complex cellular machinery.

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  • 4. 

    Which is the common pathway for both aerobic and anaerobic pathways?

    • Glycolysis

    • Tricarboxylic Acid Cycle

    • Citric Acid Cycle

    • Kreb cycle

    Correct Answer
    A. Glycolysis
    Explanation
    Glycolysis is the common pathway for both aerobic and anaerobic pathways. It is the initial step in cellular respiration where glucose is broken down into pyruvate. This process occurs in the cytoplasm and does not require oxygen. In aerobic respiration, the pyruvate produced in glycolysis is further broken down in the Tricarboxylic Acid Cycle (also known as the Citric Acid Cycle or Kreb cycle) to produce more energy. In anaerobic respiration, the pyruvate is converted into other byproducts without the need for oxygen. Therefore, glycolysis is the correct answer as it is involved in both aerobic and anaerobic pathways.

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  • 5. 

    Glycolysis, the process of creating new ATP, requires what?

    • A six-carbon sugar

    • Two three-carbon sugars

    • NADH

    • Oxygen

    Correct Answer
    A. A six-carbon sugar
    Explanation
    Glycolysis is anaerobic and does not require oxygen. Glucose, a six-carbon sugar, is split into smaller molecules and is essential for glycolysis.

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  • 6. 

    The high concentration of glucose 6-phosphate inhibits

    • Hexokinase

    • Kinase

    • Pentokinase

    • Glucokinase

    Correct Answer
    A. Hexokinase
    Explanation
    Hexokinase is the correct answer because high concentration of glucose 6-phosphate inhibits its activity. Hexokinase is an enzyme that catalyzes the phosphorylation of glucose to glucose 6-phosphate, and this product acts as a feedback inhibitor of hexokinase. When the concentration of glucose 6-phosphate is high, it signals that there is already enough glucose 6-phosphate in the cell and the production of more is not needed, thus inhibiting the activity of hexokinase.

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  • 7. 

    EMP pathway is also called?

    • Kreb cycle

    • Dark reaction

    • Stroma Reaction

    • Glycolysis

    Correct Answer
    A. Glycolysis
    Explanation
    The EMP pathway is also known as glycolysis. Glycolysis is the metabolic pathway that converts glucose into pyruvate, generating ATP and NADH in the process. It is the first step in cellular respiration and occurs in the cytoplasm of cells. The other options mentioned, Kreb cycle, Dark reaction, and Stroma Reaction, are not synonymous with the EMP pathway and refer to different metabolic processes.

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  • 8. 

    From where is the energy required for glycolysis derived?

    • From the ATP molecules

    • From the breaking apart of glucose

    • From making carbon-carbon bonds.

    • From the process of converting ATP to ADP

    Correct Answer
    A. From the breaking apart of glucose
    Explanation
    The energy required for glycolysis is primarily derived from the breaking apart of glucose molecules. Glycolysis is a metabolic pathway that involves the breakdown of glucose into smaller molecules, ultimately producing energy in the form of ATP (adenosine triphosphate) and NADH (nicotinamide adenine dinucleotide). During the early steps of glycolysis, ATP molecules are consumed to initiate the process, but the net production of ATP occurs later in the pathway through substrate-level phosphorylation. This process involves transferring phosphate groups from intermediates in glycolysis to ADP (adenosine diphosphate), forming ATP.

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  • 9. 

    How many ATP molecules are produced in the EMP pathway?

    • 24 ATP molecules

    • 16 molecules

    • 32 molecules

    • 2 molecules

    Correct Answer
    A. 2 molecules
    Explanation
    The EMP pathway/glycolysis only produces a net of 2 ATPs. The produced NADH molecules are only used to generate ATP by substrate-level phosphorylation in the tricarboxylic acid cycle, which is a different cycle. The correct answer to this question is "2 ATP molecules."

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  • 10. 

    What percentage of the total chemical energy in glucose is released in glycolysis? 

    • 50%

    • 1.10%

    • 5%

    • 5.26%.

    Correct Answer
    A. 5.26%.
    Explanation
    Explore
    Glycolysis, the first step in the breakdown of glucose to extract energy for cellular metabolism, produces a net gain of two ATP molecules per molecule of glucose. However, the complete oxidation of one glucose molecule during cellular respiration (including glycolysis, the Krebs cycle, and oxidative phosphorylation) produces a theoretical maximum yield of 36 to 38 ATP molecules. Therefore, the percentage of total chemical energy in glucose that is released during glycolysis can be estimated as (2 ATP / 38 ATP) * 100% = approximately 5.26%. This means that a relatively small fraction of the total chemical energy in glucose is released during glycolysis, with the majority being released during the later stages of cellular respiration. 

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Zohra Sattar Waxali |PhD (Chemistry) |
Chemistry
Dr. Zohra Sattar Waxali earned her doctorate in chemistry and biochemistry from Northwestern University, specializing in the metallomes of cardiac cells and stem cells, and their impact on biological function. Her research encompasses the development of arsenoplatin chemotherapeutics, stapled peptide estrogen receptor inhibitors, and antimicrobial natural products.

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  • Feb 15, 2024
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    Expert Reviewed by
    Zohra Sattar Waxali
  • May 09, 2010
    Quiz Created by
    Jakewallach
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