Biology- Cell Respiration Quiz Questions

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  • 1/23 Questions

    Muscle soreness can be caused by-

    • The Krebs cycle.
    • Glycolysis.
    • Lactic acid fermentation.
    • The Calvin cycle.
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About This Quiz

In today’s set of quiz questions on the scientific study of biology, we’ll be seeing just how much you can tell us about the topic of cell respiration. Can you name the parts of the ATP molecule? Where is energy stored? All these questions and much more await you in this one!

Cellular Processes Quizzes & Trivia

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  • 2. 

    Which of these is NOT part of cellular respiration?

    • Photosynthesis

    • Electron transport

    • Krebs cycle

    • Glycolysis

    Correct Answer
    A. Photosynthesis
    Explanation
    Photosynthesis is the process by which plants convert sunlight into energy, while cellular respiration is the process by which cells convert glucose into energy. While both processes involve energy production, photosynthesis occurs in plants and some bacteria, while cellular respiration occurs in all living organisms. Therefore, photosynthesis is not part of cellular respiration.

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  • 3. 

    The three parts of an ATP molecule are-

    • Adenine, chlorophyll, stroma.

    • Adenine, grana, chlorophyll.

    • Adenine, ribose, phosphate.

    • NADH, NADPH, and adenine.

    Correct Answer
    A. Adenine, ribose, phosphate.
    Explanation
    The ATP molecule is composed of three main parts: adenine, ribose, and phosphate. Adenine is a nitrogenous base that provides the energy-carrying capacity of ATP. Ribose is a five-carbon sugar that serves as the backbone of the molecule. Phosphate groups are responsible for storing and releasing energy in ATP through the breaking and forming of high-energy bonds. Therefore, the correct answer is adenine, ribose, and phosphate.

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  • 4. 

    The correct order of cellular respiration is-

    • Glycolysis-fermentation-Krebs cycle.

    • Fermentation-electron transport- glycolysis.

    • Glycolysis-Kreb cycle- electron transport.

    • Krebs cycle-glycolysis-electron transport.

    Correct Answer
    A. Glycolysis-Kreb cycle- electron transport.
    Explanation
    The correct order of cellular respiration is glycolysis-Krebs cycle-electron transport. This is because glycolysis is the first step in cellular respiration, where glucose is broken down into pyruvate. The pyruvate then enters the Krebs cycle, also known as the citric acid cycle, where it is further broken down and produces energy-rich molecules like NADH and FADH2. Finally, the NADH and FADH2 molecules enter the electron transport chain, where they donate electrons to produce ATP through oxidative phosphorylation. Therefore, the correct order is glycolysis-Krebs cycle-electron transport.

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  • 5. 

    Cellular respiration is an aerobic process because it must have which of the following to occur?

    • Sunlight

    • Water

    • Oxygen

    • Glycogen

    Correct Answer
    A. Oxygen
    Explanation
    Cellular respiration is an aerobic process because it requires oxygen to occur. Oxygen is necessary for the final step of cellular respiration, which is the electron transport chain. During this step, oxygen acts as the final electron acceptor, allowing the production of ATP, the cell's main source of energy. Without oxygen, cellular respiration cannot proceed efficiently, and the cell would switch to anaerobic respiration, resulting in the production of less ATP and the accumulation of lactic acid or ethanol.

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  • 6. 

    When oxygen is present, what follows glycolysis?

    • Photosynthesis

    • Lactic acid fermentation

    • Alcohol fermentation

    • The Krebs cycle

    Correct Answer
    A. The Krebs cycle
    Explanation
    When oxygen is present, the next step after glycolysis is the Krebs cycle. The Krebs cycle, also known as the citric acid cycle, is a series of chemical reactions that occur in the mitochondria of cells. It is an aerobic process, meaning it requires oxygen. During the Krebs cycle, the products of glycolysis are further broken down, releasing energy in the form of ATP and producing carbon dioxide as a waste product. This cycle is an important part of cellular respiration and is essential for the production of energy in the form of ATP.

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  • 7. 

    Plants take in the sun's energy by absorbing-

    • High-energy carbohydrates.

    • Chlorophyll.

    • Chloroplasts.

    • Sunlight.

    Correct Answer
    A. Sunlight.
    Explanation
    Plants take in the sun's energy through a process called photosynthesis, which occurs in their chloroplasts. Chlorophyll, a pigment found in chloroplasts, captures the sunlight and converts it into chemical energy in the form of high-energy carbohydrates. Therefore, while both chlorophyll and chloroplasts are involved in the process, the primary source of energy for plants is sunlight.

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  • 8. 

    A green pigment that traps energy from sunlight is-

    • Chloroplasts.

    • ATP.

    • Chlorophyll.

    • Thylakoid membranes.

    Correct Answer
    A. Chlorophyll.
    Explanation
    Chlorophyll is the correct answer because it is a green pigment that is responsible for trapping energy from sunlight during the process of photosynthesis. It is found in the chloroplasts of plant cells and is essential for converting sunlight into chemical energy in the form of ATP. Chlorophyll absorbs light energy and uses it to power the synthesis of organic molecules, which are then used by the plant for growth and other metabolic processes. Thylakoid membranes are part of the chloroplasts where the chlorophyll molecules are located, but they are not the actual pigment itself.

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  • 9. 

    Which of these occurs in the cytoplasm?

    • Glycolysis

    • Electron transport

    • Krebs cycle

    • Photosynthesis

    Correct Answer
    A. Glycolysis
    Explanation
    Glycolysis is the correct answer because it is a metabolic pathway that occurs in the cytoplasm of cells. It is the first step in cellular respiration and involves the breakdown of glucose into pyruvate, releasing energy in the form of ATP. Electron transport, Krebs cycle, and photosynthesis do not occur in the cytoplasm but take place in other cellular compartments such as the mitochondria and chloroplasts.

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  • 10. 

    Which of the following is NOT a part of adenosine diphosphate?

    • Three phosphate groups

    • Two phosphate groups

    • Ribose

    • Adenine

    Correct Answer
    A. Three phosphate groups
    Explanation
    Adenosine diphosphate (ADP) is a molecule that consists of adenosine, ribose, and two phosphate groups. The correct answer is "three phosphate groups" because ADP only has two phosphate groups.

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  • 11. 

    Energy is stored when-

    • The third phosphate group breaks off from a ADP molecule.

    • Cells break down sucrose to glucose and fructose.

    • A third phosphate group is bonded to an ADP molecule to form ATP.

    • Minerals are released into the bloodstream.

    Correct Answer
    A. A third phosphate group is bonded to an ADP molecule to form ATP.
    Explanation
    When a third phosphate group is bonded to an ADP molecule to form ATP, energy is stored. This is because the addition of the phosphate group requires energy, and ATP is a molecule that stores and releases energy for cellular processes.

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  • 12. 

    Which of the following is NOT true?

    • ATP consists of adenine, ribose, and phosphate.

    • When ATP releasesenergy, ADP is formed.

    • ATP provides energy for cells to function

    • Used ATP is discarded by the cell as waste.

    Correct Answer
    A. Used ATP is discarded by the cell as waste.
    Explanation
    ATP is not discarded by the cell as waste. Instead, when ATP is used by the cell to release energy, it is converted into ADP (adenosine diphosphate) and inorganic phosphate. The ADP can then be recycled back into ATP through the process of cellular respiration. Therefore, used ATP is not wasted but rather recycled and reused by the cell.

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  • 13. 

    ATP releases energy when a bond is broken between-

    • Two phosphate groups.

    • Adenine and ribose.

    • Adenine and a phosphate group.

    • Ribose and a phosphate group.

    Correct Answer
    A. Two phosphate groups.
    Explanation
    ATP (adenosine triphosphate) is a molecule that stores and releases energy in cells. It consists of three phosphate groups attached to an adenosine molecule. When one of the phosphate groups is broken off from ATP, it releases energy. Therefore, the correct answer is that ATP releases energy when a bond is broken between two phosphate groups.

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  • 14. 

    During aerobic cellular respiration, one molecule of glucose is used to produce how many ATP molecules?

    • 2

    • 8

    • 36

    • 40

    Correct Answer
    A. 36
    Explanation
    During aerobic cellular respiration, glucose undergoes a series of metabolic reactions in the presence of oxygen to produce energy in the form of ATP. The complete breakdown of one molecule of glucose through aerobic respiration yields a net gain of 36 ATP molecules. This is because each molecule of glucose is converted into two molecules of pyruvate during glycolysis, which then enter the Krebs cycle and the electron transport chain, resulting in the production of a total of 36 ATP molecules.

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  • 15. 

    Which of these if broken down during cellular respiration to release energy?

    • Food molecules

    • ADP

    • Water

    • Carbon dioxide

    Correct Answer
    A. Food molecules
    Explanation
    During cellular respiration, food molecules are broken down to release energy. This process occurs in the mitochondria of cells and involves the breakdown of glucose molecules through a series of chemical reactions. The energy stored in the bonds of the food molecules is released and converted into ATP (adenosine triphosphate), which is the primary energy currency of cells. Therefore, food molecules are the source of energy in cellular respiration.

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  • 16. 

    The Krebs cycle will NOT occur if-

    • Oxygen is present.

    • Fermentation occurs.

    • Carbon dioxide is present.

    • Water is present.

    Correct Answer
    A. Fermentation occurs.
    Explanation
    The Krebs cycle, also known as the citric acid cycle, is a crucial metabolic pathway that takes place in the mitochondria of cells. It is an aerobic process, meaning it requires oxygen to occur. Fermentation, on the other hand, is an anaerobic process that occurs in the absence of oxygen. During fermentation, glucose is broken down into simpler molecules without the involvement of the Krebs cycle. Therefore, if fermentation occurs, it indicates the absence of oxygen, and as a result, the Krebs cycle will not take place.

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  • 17. 

    Which of the following best summarizes the process of photosynthesis?

    • C+O2+H2O+energy-CO2+H20

    • 6CO2+6H2O+energy-C6H12O6+6O2

    • C12H6O6-6CO2+6H2O+energy

    • 6CO+6H2O-C6H12O6+energy

    Correct Answer
    A. 6CO2+6H2O+energy-C6H12O6+6O2
    Explanation
    The correct answer summarizes the process of photosynthesis by showing that carbon dioxide (CO2) and water (H2O), along with energy, are converted into glucose (C6H12O6) and oxygen (O2) through the process of photosynthesis.

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  • 18. 

    Cellular respiration always releases-

    • Oxygen.

    • Carbon monoxide.

    • Energy.

    • Lactic acid.

    Correct Answer
    A. 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 a fundamental metabolic process that occurs in all living organisms. Oxygen is required for cellular respiration, but it is not released as a byproduct. Carbon monoxide is a toxic gas and not a product of cellular respiration. Lactic acid is produced during anaerobic respiration, not cellular respiration. Therefore, the correct answer is energy, as cellular respiration releases energy that can be used by the cell for various functions.

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  • 19. 

    Lactic acid fermentation occurs in-

    • Bread that is rising.

    • Any environment without oxygen.

    • Muscle cells.

    • Mitochondria.

    Correct Answer
    A. Muscle cells.
    Explanation
    Lactic acid fermentation occurs in muscle cells. During strenuous exercise, the demand for energy exceeds the supply of oxygen, leading to anaerobic conditions. In this situation, muscle cells switch to lactic acid fermentation to generate energy. This process helps in the production of ATP, allowing muscles to continue contracting even in the absence of oxygen.

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  • 20. 

    During photosynthesis, the light reactions-

    • Release carbon dioxide.

    • Release oxygen.

    • Create water molecules from hydrogen and oxygen.

    • Produce NADP.

    Correct Answer
    A. Release oxygen.
    Explanation
    During photosynthesis, the light reactions involve the absorption of light energy by chlorophyll molecules in the chloroplasts of plant cells. This energy is used to split water molecules into hydrogen and oxygen. The oxygen released as a byproduct is then released into the atmosphere. Therefore, the correct answer is that the light reactions of photosynthesis release oxygen.

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  • 21. 

    Which of the following correctly summarizes aerobic cellar respiration?

    • 602+C6H12O6-6CO2+6H2O+energy

    • 6O2+C6H12O6+ energy-6CO2+6H2O

    • 6CO2+6H2O-6O2+C6HO6+energy

    • 6CO2+6H2O+energy-6O2+C6H12O6

    Correct Answer
    A. 602+C6H12O6-6CO2+6H2O+energy
  • 22. 

    ADP contains which of these sugars?

    • Adenine

    • Ribose

    • Glucose

    • Guanine

    Correct Answer
    A. Ribose
    Explanation
    ADP contains ribose because ribose is a sugar molecule that is a component of nucleotides, including ATP and ADP. Ribose is a pentose sugar, meaning it has five carbon atoms, and it plays a crucial role in the structure and function of nucleic acids. In ADP, ribose is bonded to the adenine molecule, forming the nucleotide adenosine diphosphate.

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  • 23. 

    The Calvin cycle produces-

    • Oxygen gas.

    • ADP.

    • High-energy sugar.

    • Carbon dioxide.

    Correct Answer
    A. High-energy sugar.
    Explanation
    The Calvin cycle is a series of chemical reactions that occur in the chloroplasts of plants during photosynthesis. It uses energy from sunlight to convert carbon dioxide into high-energy sugars, such as glucose. These sugars are essential for the plant's growth and serve as a source of energy for various cellular processes. Therefore, the correct answer is high-energy sugar.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 11, 2010
    Quiz Created by
    Sashatokold
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