How Much Do You Know About Cellular Energy Production? Trivia Quiz

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How Much Do You Know About Cellular Energy Production? Trivia Quiz - Quiz

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Questions and Answers
  • 1. 

    Which of the following are the ending product(s) of cellular respiration?

    • A.

      ATP

    • B.

      Carbon Dioxide

    • C.

      Glucose

    • D.

      Oxygen

    • E.

      Water

    Correct Answer(s)
    A. ATP
    B. Carbon Dioxide
    E. Water
    Explanation
    Cellular respiration is the process by which cells convert glucose and oxygen into ATP, carbon dioxide, and water. ATP is the main energy currency of the cell, while carbon dioxide and water are waste products. Therefore, the ending products of cellular respiration are ATP, carbon dioxide, and water.

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  • 2. 

    The first step in releasing the energy of glucose in the cell is known as

    • A.

      Fermentation

    • B.

      Glycolysis

    • C.

      The Krebs Cycle

    • D.

      Electron Transport Chain

    Correct Answer
    B. Glycolysis
    Explanation
    Glycolysis is the first step in releasing the energy of glucose in the cell. It is a metabolic pathway that breaks down glucose into pyruvate, producing a small amount of ATP and NADH in the process. This process occurs in the cytoplasm of the cell and does not require oxygen. Fermentation, the Krebs Cycle, and the Electron Transport Chain are subsequent steps in cellular respiration that occur in the presence of oxygen and further break down pyruvate to produce more ATP.

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  • 3. 

    Which process releases the most ATP?

    • A.

      Alcoholic Fermentation

    • B.

      Glycolysis

    • C.

      Krebs Cycle

    • D.

      Electron Transport Chain

    Correct Answer
    D. Electron Transport Chain
    Explanation
    The electron transport chain is the process that releases the most ATP. It is the final step in cellular respiration and occurs in the mitochondria. During this process, electrons from NADH and FADH2 are passed along a series of protein complexes, creating a proton gradient across the inner mitochondrial membrane. This gradient drives the synthesis of ATP through ATP synthase. The electron transport chain produces a total of 34 ATP molecules, making it the most efficient process for ATP production.

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  • 4. 

    Where does glycolysis take place?

    • A.

      Nucleus

    • B.

      Cell membrane

    • C.

      Cytoplasm

    • D.

      Mitochondrion

    Correct Answer
    C. Cytoplasm
    Explanation
    Glycolysis is the metabolic pathway that breaks down glucose into pyruvate. It is the first step in cellular respiration and occurs in the cytoplasm of the cell. The cytoplasm is the fluid-filled region between the cell membrane and the nucleus, where many cellular processes take place. Therefore, glycolysis takes place in the cytoplasm.

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  • 5. 

    While investigating yeast respiration, a researcher detects ethanol (alcohol) in the yeast. What other molecule should the yeast also contain if it is undergoing alcoholic fermentation?

    • A.

      Lactic acid

    • B.

      Oxygen

    • C.

      Carbon dioxide

    • D.

      Water

    Correct Answer
    C. Carbon dioxide
    Explanation
    The yeast should also contain carbon dioxide if it is undergoing alcoholic fermentation. Alcoholic fermentation is a metabolic process in which yeast converts sugars into ethanol and carbon dioxide. The production of carbon dioxide is a characteristic feature of this type of fermentation.

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  • 6. 

    In what organism does alcoholic fermentation mostly occur?

    • A.

      Yeast

    • B.

      Humans

    • C.

      Fruit flies

    • D.

      Plants

    Correct Answer
    A. Yeast
    Explanation
    Alcoholic fermentation mostly occurs in yeast. Yeast is a type of fungus that is commonly used in the production of alcoholic beverages such as beer and wine. During alcoholic fermentation, yeast converts sugars into alcohol and carbon dioxide. This process is anaerobic, meaning it occurs in the absence of oxygen. While other organisms such as humans, fruit flies, and plants can also undergo fermentation, yeast is the organism in which alcoholic fermentation is most prominent.

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  • 7. 

    The products of photosynthesis are the  

    • A.

      Products of cellular respiration

    • B.

      Reactants of cellular respiration

    • C.

      Products of glycolysis

    • D.

      Reactants of fermentation

    Correct Answer
    B. Reactants of cellular respiration
    Explanation
    The products of photosynthesis, which are glucose and oxygen, are used as reactants in cellular respiration. Cellular respiration is the process by which cells break down glucose to produce energy in the form of ATP. Oxygen is used as an electron acceptor in the electron transport chain, while glucose is broken down through glycolysis and the citric acid cycle. Therefore, the products of photosynthesis serve as the reactants for cellular respiration.

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  • 8. 

    How do heterotrophs get the energy they need? 

    • A.

      By burning food molecules and making water

    • B.

      By breathing oxygen into the lungs and combining it with carbon dioxide

    • C.

      By breaking down food molecules gradually and making ATP

    • D.

      By using the sun's energy to break down food molecules and form chemicals

    Correct Answer
    C. By breaking down food molecules gradually and making ATP
    Explanation
    Heterotrophs obtain energy by breaking down food molecules gradually and making ATP. ATP, or adenosine triphosphate, is a molecule that stores and releases energy for cellular processes. Through the process of cellular respiration, heterotrophs break down organic compounds in food, such as carbohydrates and fats, and convert them into ATP. This ATP is then used as a source of energy for various cellular activities, including growth, movement, and reproduction.

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  • 9. 

    In Eukaryotes, the electron transport chain occurs in the 

    • A.

      Mitochondria

    • B.

      Nucleus

    • C.

      Cell membrane

    • D.

      Cytoplasm

    Correct Answer
    A. Mitochondria
    Explanation
    The correct answer is mitochondria. In eukaryotes, the electron transport chain is a process that occurs in the mitochondria. This process is responsible for generating ATP, the main energy currency of the cell. The mitochondria have an inner membrane where the electron transport chain takes place, involving a series of protein complexes and electron carriers that transport electrons and create a proton gradient. This gradient is then used by ATP synthase to produce ATP.

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  • 10. 

    Glycolysis makes approximately how many ATP?

    • A.

      2 ATP molecules

    • B.

      4 ATP molecules

    • C.

      32 ATP molecules

    • D.

      36 ATP molecules

    Correct Answer
    A. 2 ATP molecules
    Explanation
    Glycolysis is the first step in cellular respiration, where glucose is broken down into pyruvate. During this process, a net of 2 ATP molecules are produced. This occurs through substrate-level phosphorylation, where ATP is directly synthesized from the transfer of a phosphate group from a high-energy molecule to ADP. Therefore, the correct answer is 2 ATP molecules.

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  • 11. 

    The Krebs Cycle makes approximately how many ATP?

    • A.

      2 ATP molecules

    • B.

      4 ATP molecules

    • C.

      32 ATP molecules

    • D.

      36 ATP molecules

    Correct Answer
    A. 2 ATP molecules
    Explanation
    The Krebs Cycle, also known as the citric acid cycle, is a series of chemical reactions that occur in the mitochondria of cells. It plays a crucial role in the production of energy in the form of ATP. During the cycle, a total of two ATP molecules are produced directly through substrate-level phosphorylation. These ATP molecules are generated from the oxidation of succinyl-CoA to succinate. Therefore, the correct answer is 2 ATP molecules.

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  • 12. 

    The Electron Transport Chain makes approximately how many ATP?

    • A.

      2 ATP molecules

    • B.

      4 ATP molecules

    • C.

      34 ATP molecules

    • D.

      36 ATP molecules

    Correct Answer
    C. 34 ATP molecules
    Explanation
    The Electron Transport Chain is the final stage of cellular respiration where the majority of ATP is produced. During this process, electrons are transferred through a series of protein complexes, creating a proton gradient across the inner mitochondrial membrane. This gradient is then used by ATP synthase to generate ATP. Each NADH molecule produces approximately 3 ATP, while each FADH2 molecule produces approximately 2 ATP. Since the Electron Transport Chain receives electrons from NADH and FADH2, which are produced earlier in the respiration process, it can generate a maximum of 34 ATP molecules.

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  • 13. 

    Alcoholic fermentation produces lactic acid and carbon dioxide.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Alcoholic fermentation actually produces ethanol and carbon dioxide, not lactic acid. Lactic acid fermentation, on the other hand, produces lactic acid and does not involve the production of carbon dioxide. Therefore, the statement that alcoholic fermentation produces lactic acid and carbon dioxide is false.

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  • 14. 

    What does cellular respiration always release?

    • A.

      Oxygen

    • B.

      Carbon monoxide

    • C.

      Energy

    • D.

      Lactic acid

    Correct Answer
    C. Energy
    Explanation
    Cellular respiration is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy in the form of ATP. It is the primary way that cells obtain energy to carry out their functions. Therefore, the correct answer is energy, as cellular respiration always releases energy.

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  • 15. 

    Where can lactic acid be found to occur?

    • A.

      In bread that is rising

    • B.

      In any environment with oxygen

    • C.

      In the mitochondria

    • D.

      In muscle cells

    Correct Answer
    D. In muscle cells
    Explanation
    Lactic acid is produced in muscle cells during intense exercise when the oxygen supply is insufficient to meet the energy demands. This anaerobic process converts glucose into lactic acid, which can accumulate and cause muscle fatigue and soreness. Therefore, lactic acid can be found to occur in muscle cells.

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  • 16. 

    During glycolysis, glucose is broken down into pyruvate, what will happen next in a humans cell in the cell if there is NO oxygen present?

    • A.

      The reaction will continue to the Krebs Cycle

    • B.

      The reaction will continue to Lactic Acid Fermentation

    • C.

      The reaction will continue to the Electron Transport Chain

    • D.

      The reaction will continue to Alcoholic Fermentation

    Correct Answer
    B. The reaction will continue to Lactic Acid Fermentation
    Explanation
    When there is no oxygen present in a human cell, the reaction will continue to Lactic Acid Fermentation. This process occurs in the cytoplasm and involves the conversion of pyruvate into lactic acid. This allows for the regeneration of NAD+ so that glycolysis can continue to produce ATP. Lactic Acid Fermentation is an anaerobic process that provides a temporary solution for energy production when oxygen is not available.

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  • 17. 

    What happens during cellular respiration?

    • A.

      Autotrophs produce carbohydrates

    • B.

      Autotrophs produce ATP

    • C.

      Heterotrophs produce carbohydrates

    • D.

      Heterotrophs produce ATP

    Correct Answer
    D. Heterotrophs produce ATP
    Explanation
    During cellular respiration, heterotrophs produce ATP. Cellular respiration is the process by which cells break down glucose and other organic molecules to release energy in the form of ATP. Heterotrophs are organisms that obtain their energy by consuming other organisms, so they rely on cellular respiration to generate ATP for their metabolic activities. Autotrophs, on the other hand, are capable of producing their own carbohydrates through photosynthesis, but they still need to undergo cellular respiration to convert these carbohydrates into ATP for energy.

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  • 18. 

    Look at the figure provided. All of the following are parts of an ADP molecule EXCEPT

    • A.

      Structure A

    • B.

      Structure B

    • C.

      Structure C

    • D.

      Structure D

    Correct Answer
    D. Structure D
    Explanation
    An ADP molecule only has 2 phosphate molecules. Adenosine DI (two) phosphate

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  • 19. 

    What happens during photosynthesis?

    • A.

      Heterotrophs consume ATP

    • B.

      Heterotrophs produce ATP

    • C.

      Autotrophs consume carbohydrates

    • D.

      Autotrophs produce carbohydrates

    Correct Answer
    D. Autotrophs produce carbohydrates
    Explanation
    Autotrophs (plants) perform photosynthesis, they do not consume carbs (glucose) they produce them during photosynthesis.

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  • 20. 

    What trait of an ATP molecule enables it to store energy for use by cells? 

    • A.

      Its small size

    • B.

      Its phosphate-phosphate bond

    • C.

      Its ability to form hydogen bonds

    • D.

      Its solubility in water

    Correct Answer
    B. Its phosphate-phosphate bond
    Explanation
    The energy of the molecule is stored in the phosphate bonds, remember that phosphates are negative and it requires energy to put them together, therefore storing energy within the bond.

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  • 21. 

    Photosynthesis occurs in two steps: light dependent reaction and then the light independent reaction. Which of the following statements best describes how these two processes are related?

    • A.

      The light-dependent reactions use ATP molecules formed during the light-independent reactions to convert CO2 into sugar molecules

    • B.

      The light-dependent reactions use sugar molecules formed during the light-independent reactions to generate ATP molecules

    • C.

      The light-independent reactions use ATP molecules formed during the light-dependent reactions to convert CO2 into sugar molecules.

    • D.

      The light-independent reactions use sugar molecules formed during light-dependent reactions to generate ATP molecules.

    Correct Answer
    C. The light-independent reactions use ATP molecules formed during the light-dependent reactions to convert CO2 into sugar molecules.
    Explanation
    Light dependent reactions make ATP, Light independent make sugar. The ATP from the light dependent are used to make the sugar in the light independent reactions. The sugar does not go back up to the light-dependent reactions.

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  • 22. 

    Photosynthesis uses sunlight to convert water and carbon dioxide into

    • A.

      Oxygen and high-energy sugars

    • B.

      High energy sugars and proteins

    • C.

      ATP and oxygen

    • D.

      Oxygen and carbon

    Correct Answer
    A. Oxygen and high-energy sugars
    Explanation
    Photosynthesis is a process in which plants use sunlight, water, and carbon dioxide to produce oxygen and high-energy sugars. Sunlight provides the energy needed for the conversion, and water and carbon dioxide serve as the raw materials. Through a series of chemical reactions, oxygen is released as a byproduct, while high-energy sugars, such as glucose, are synthesized and stored as a source of energy for the plant. This process is essential for the survival of plants and also plays a crucial role in maintaining the oxygen levels in the atmosphere.

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  • 23. 

    Which of the following is NOT an autotroph?

    • A.

      Grasshopper

    • B.

      Oak Tree

    • C.

      Wheat

    • D.

      Celery

    Correct Answer
    A. Grasshopper
    Explanation
    Autotrophs make their own food, Grasshoppers are a consumer or heterotroph.

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  • 24. 

    How does ADP differ from ATP?

    • A.

      ADP has one more phosphate group and can store more energy

    • B.

      ADP has one less phosphate group and can store less energy

    • C.

      ADP has one more phosphate group and stores less energy

    • D.

      ADP has one less phosphate group and can store more energy

    Correct Answer
    B. ADP has one less phosphate group and can store less energy
    Explanation
    ADP has 2 phosphates, ATP has 3. ADP is a low battery while ATP is a fully charged battery.

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  • 25. 

    Which of the following chemical reactions correctly summarizes photosynthesis?

    • A.

      4 CO2 + 6 H2O + 2 O2 ---> C6H12O6

    • B.

      6 CO2 + 6 H2O ---> C6H12O6 + 6 O2

    • C.

      6 H2O + 6 H2 ---> C6H12O6

    • D.

      6 CO2 + 6 H2O + 6 O2 ---> C6H12O6 + O2

    Correct Answer
    B. 6 CO2 + 6 H2O ---> C6H12O6 + 6 O2
    Explanation
    The correct answer is 6 CO2 + 6 H2O ---> C6H12O6 + 6 O2. This equation correctly summarizes photosynthesis because it shows the reaction of carbon dioxide (CO2) and water (H2O) in the presence of sunlight to produce glucose (C6H12O6) and oxygen (O2). This equation represents the overall process of photosynthesis, where carbon dioxide is converted into glucose, a form of stored energy, and oxygen is released as a byproduct.

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  • 26. 

    Which of the following does NOT occur during the light-dependent reactions of photosynthesis? 

    • A.

      Chlorophyll absorbs energy from the sun.

    • B.

      Carbon dioxide combines with hydrogen ions to form sugar.

    • C.

      Water molecules are split.

    • D.

      ATP is produced.

    Correct Answer
    B. Carbon dioxide combines with hydrogen ions to form sugar.
    Explanation
    During the light-dependent reactions of photosynthesis, chlorophyll absorbs energy from the sun, water molecules are split, and ATP is produced. These reactions occur in the thylakoid membrane of the chloroplasts. However, the formation of sugar from carbon dioxide and hydrogen ions occurs during the light-independent reactions, also known as the Calvin cycle, which takes place in the stroma of the chloroplasts. Therefore, the statement "Carbon dioxide combines with hydrogen ions to form sugar" does not occur during the light-dependent reactions.

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  • 27. 

    Which of the following is true about the energy used in the light independent reactions?

    • A.

      It comes directly from the sun

    • B.

      It comes from molecules stored in the roots of the plant

    • C.

      It is produced during the Calvin Cycle

    • D.

      It is produced in the light dependent reactions

    Correct Answer
    D. It is produced in the light dependent reactions
    Explanation
    The calvin cycle is the light independent reactions. ATP is made during the light dependent and used in the light independent.

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  • 28. 

    In photosynthesis, energy from the sun is converted to (and stored in) which of the following?

    • A.

      Chemical bonds in carbohydrates

    • B.

      Enzymes in the chloroplasts

    • C.

      Carbon dioxide and water

    • D.

      Chlorophyll

    Correct Answer
    A. Chemical bonds in carbohydrates
    Explanation
    Sugar is made during photosynthesis, and the energy is stored in the glucose molecules

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  • 29. 

    Where do plants get the energy they need to carry out photosynthesis?

    • A.

      Air

    • B.

      Soil

    • C.

      Sunlight

    • D.

      Water

    Correct Answer
    C. Sunlight
    Explanation
    Plants get the energy they need to carry out photosynthesis from sunlight. During photosynthesis, plants convert sunlight into chemical energy, which is used to fuel the process of converting carbon dioxide and water into glucose and oxygen. Sunlight provides the necessary energy for this conversion to occur, allowing plants to produce their own food and release oxygen into the atmosphere.

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  • 30. 

    In addition to light and chlorophyll, photosynthesis requires

    • A.

      Carbon dioxide and sugars

    • B.

      Carbon dioxide and water

    • C.

      Oxygen and sugars

    • D.

      Oxygen and water

    Correct Answer
    B. Carbon dioxide and water
    Explanation
    Photosynthesis is the process by which plants convert light energy into chemical energy in the form of glucose. In order for photosynthesis to occur, plants require carbon dioxide and water. Carbon dioxide is obtained from the atmosphere through tiny pores called stomata, while water is absorbed by the roots and transported to the leaves. In the presence of light and chlorophyll, carbon dioxide and water undergo a series of chemical reactions to produce glucose and oxygen, which is released back into the atmosphere. Therefore, carbon dioxide and water are essential for photosynthesis to take place.

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  • 31. 

    The light-independent reactions of photosynthesis are also known as the

    • A.

      ATP Cycle

    • B.

      Calvin Cycle

    • C.

      Carbon Cycle

    • D.

      Sugar Cycle

    Correct Answer
    B. Calvin Cycle
    Explanation
    The light-independent reactions of photosynthesis, also known as the Calvin Cycle, occur in the stroma of the chloroplasts. During this cycle, carbon dioxide is converted into glucose through a series of chemical reactions. The energy needed for these reactions is provided by ATP and NADPH, which are produced in the light-dependent reactions. The Calvin Cycle is essential for the production of glucose, which serves as a source of energy for plants and other organisms.

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  • 32. 

    What uses ATP, NADpH, and CO2 to make glucose?

    • A.

      Photosynthesis

    • B.

      Electron Transport Chain

    • C.

      Light-Dependent Reaction

    • D.

      Light-Independent Reaction

    Correct Answer
    D. Light-Independent Reaction
    Explanation
    The light-independent reaction, also known as the Calvin cycle, uses ATP, NADPH, and CO2 to make glucose during photosynthesis. This process occurs in the stroma of chloroplasts and does not require light directly. Instead, it relies on the energy stored in ATP and NADPH, which are produced during the light-dependent reactions. The CO2 is fixed and converted into glucose through a series of enzyme-catalyzed reactions, ultimately producing the energy-rich sugar molecule that can be used by the plant for growth and other metabolic processes.

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  • 33. 

    Look at the figure provided. Which letter represents the "adenosine" molecule 

    • A.

      Structure A

    • B.

      Structure B

    • C.

      Structure C

    • D.

      Structure D

    • E.

      Structure E

    Correct Answer
    E. Structure E
    Explanation
    An ADP molecule only has 2 phosphate molecules. Adenosine DI (two) phosphate

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  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 24, 2017
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    Anna Montague
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