Cellular Energy: Keystone Exam! Trivia Quiz

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Cellular Energy: Keystone Exam! Trivia Quiz - Quiz

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Questions and Answers
  • 1. 

    In what way are photosynthesis and cellular Is respiration similar?

    • A.

      They both occur in chloroplasts.

    • B.

      They both require sunlight.

    • C.

      They both involve organic and inorganic molecules.

    • D.

      They both require oxygen and produce carbon dioxide.

    Correct Answer
    C. They both involve organic and inorganic molecules.
    Explanation
    Photosynthesis and cellular respiration are similar in that they both involve organic and inorganic molecules. In photosynthesis, organic molecules such as glucose are produced using inorganic molecules like carbon dioxide and water, with the help of sunlight. On the other hand, in cellular respiration, organic molecules like glucose are broken down to release energy, and inorganic molecules like oxygen are used and carbon dioxide is produced. Therefore, both processes involve the interaction of organic and inorganic molecules to carry out their respective functions.

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  • 2. 

    A student performed an experiment to demonstrate that a plant needs chlorophyll for photosynthesis. He used plants that had green leaves with white areas. After exposing the plants to sunlight, he removed a leaf from each plant and processed the leaves to remove the chlorophyll. He then tested each leaf for the presence of starch. Starch was found in the area of the leaf that was green, and no starch was found in the area of the leaf that was white. He concluded that chlorophyll is necessary for photosynthesis. Which statement represents an assumption the the student had to make in order to draw this conclusion?

    • A.

      Starch is synthesized from the glucose produced in the green areas of the leaf.

    • B.

      Starch is converted to chlorophyll in the green areas of the leaf.

    • C.

      The white areas of the leaf do not have cells.

    • D.

      The green areas of the leaf are heterotrophic.

    Correct Answer
    A. Starch is synthesized from the glucose produced in the green areas of the leaf.
    Explanation
    The student had to assume that starch is synthesized from the glucose produced in the green areas of the leaf in order to draw the conclusion that chlorophyll is necessary for photosynthesis. This assumption is based on the understanding that photosynthesis is the process by which plants convert sunlight into glucose, which is then used to synthesize starch. Since starch was found in the green areas of the leaf where chlorophyll is present, it suggests that chlorophyll is essential for photosynthesis and the production of glucose, which is then converted into starch.

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  • 3. 

    The diagram below represents events associated with a biochemical process that occurs in some organisms.   Which statement concerning this process is correct?

    • A.

      The process represented is respiration and the primary source of energy for the process is the Sun.

    • B.

      The process represented is photosynthesis and the primary source of energy for the process is the Sun.

    • C.

      Process converts energy in organic compounds into solar energy which is released into the atmosphere.

    • D.

      This process uses solar energy to convert oxygen into carbon dioxide.

    Correct Answer
    B. The process represented is photosynthesis and the primary source of energy for the process is the Sun.
    Explanation
    The diagram represents the process of photosynthesis, which is the process by which plants convert sunlight into energy. Photosynthesis is the primary source of energy for many organisms, as it produces glucose, which is used for cellular respiration. The statement correctly identifies that the primary source of energy for the process represented in the diagram is the Sun.

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  • 4. 

    Decomposers are necessary in an ecosystem because they

    • A.

      Produce food for plants by the process of photosynthesis

    • B.

      Provide energy for plants by the process of decay

    • C.

      Can rapidly reproduce and evolve

    • D.

      Make inorganic materials available to plants

    Correct Answer
    D. Make inorganic materials available to plants
    Explanation
    Decomposers are necessary in an ecosystem because they make inorganic materials available to plants. Decomposers such as bacteria and fungi break down dead organic matter into simpler inorganic compounds, releasing nutrients like nitrogen, phosphorus, and potassium. These nutrients are then absorbed by plants and used for their growth and development. Without decomposers, the organic matter would accumulate and nutrients would remain locked in dead organisms, making them unavailable for plants. Therefore, decomposers play a crucial role in recycling nutrients and maintaining the balance of an ecosystem.

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  • 5. 

    Which phrase, if placed in box X, would correctly complete the flowchart shown below?  

    • A.

      Increased use of starch in root cells

    • B.

      Increased concentration of glucose in leaf cells

    • C.

      Decreased ATP in root cells

    • D.

      Decreased concentration of oxygen in leaf cells

    Correct Answer
    B. Increased concentration of glucose in leaf cells
    Explanation
    The flowchart is likely depicting a process related to cellular respiration. Increased concentration of glucose in leaf cells would correctly complete the flowchart because glucose is the main substrate for cellular respiration. As glucose is broken down in the presence of oxygen, ATP is produced, which is the energy currency of the cell. Therefore, increased concentration of glucose in leaf cells would lead to an increase in ATP production.

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  • 6. 

    Certain poisons are toxic to organisms because they interfere with the function of enzymes in mitochondria. This results directly in the inability of the cell to

    • A.

      Store information

    • B.

      Build proteins

    • C.

      Release energy from nutrients

    • D.

      Dispose of metabolic wastes

    Correct Answer
    C. Release energy from nutrients
    Explanation
    Certain poisons interfere with the function of enzymes in mitochondria, which are responsible for energy production in cells. When these enzymes are disrupted, the cell is unable to release energy from nutrients effectively. This can lead to a decrease in cellular energy levels, affecting various metabolic processes and ultimately causing harm to the organism.

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  • 7. 

    Which substance is the most direct source of the the energy that an animal cell uses for the synthesis of materials?

    • A.

      ATP

    • B.

      Glucose

    • C.

      DNA

    • D.

      Starch

    Correct Answer
    A. ATP
    Explanation
    ATP (adenosine triphosphate) is the most direct source of energy for an animal cell. ATP is produced during cellular respiration and is used by cells as a source of chemical energy to carry out various cellular processes, including the synthesis of materials. Glucose, DNA, and starch are important molecules in cellular processes, but they are not the direct source of energy for synthesis.

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  • 8. 

    Which statement best describes these cells?

    • A.

      Cell B lacks vacuoles while cell A has them.

    • B.

      DNA would not be found in either cell A or cell B.

    • C.

      Both cell A and cell B use energy released from ATP.

    • D.

      Both cell A and cell B produce antibiotics.

    Correct Answer
    C. Both cell A and cell B use energy released from ATP.
    Explanation
    Both cell A and cell B use energy released from ATP. This statement suggests that both cells A and B require ATP (adenosine triphosphate) for energy. ATP is the primary energy currency in cells and is used for various cellular processes, such as metabolism, active transport, and synthesis of macromolecules. This statement implies that both cells A and B have similar energy requirements and rely on ATP for their energy needs.

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  • 9. 

    Why is a mushroom considered a heterotroph?

    • A.

      It manufactures its own food.

    • B.

      It divides by mitosis.

    • C.

      It transforms light energy into chemical energy.

    • D.

      It obtains nutrients from its environment.

    Correct Answer
    D. It obtains nutrients from its environment.
    Explanation
    A mushroom is considered a heterotroph because it obtains nutrients from its environment. Unlike autotrophs, which can produce their own food through photosynthesis, mushrooms rely on external sources for their nutrition. They obtain organic matter from decaying plants or other organic materials in their surroundings, breaking them down and absorbing the nutrients. This process of obtaining nutrients from the environment is characteristic of heterotrophs.

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  • 10. 

    Which body system is correctly paired with its function?

    • A.

      Excretory - produces antibodies to fight disease-causing organisms

    • B.

      Digestive - produces hormones for storage and insulation

    • C.

      Circulatory - transports materials for energy release in body cells

    • D.

      Respiratory - collects waste material for digestion

    Correct Answer
    C. Circulatory - transports materials for energy release in body cells
    Explanation
    The circulatory system is correctly paired with its function of transporting materials for energy release in body cells. This system consists of the heart, blood vessels, and blood, which work together to deliver oxygen, nutrients, hormones, and other essential substances to the body's cells. Additionally, the circulatory system helps remove waste products, such as carbon dioxide, from the cells. Overall, it plays a vital role in maintaining homeostasis and ensuring the proper functioning of the body's organs and tissues.

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  • 11. 

    Which statement most accurately predicts what would happen in the aquarium shown below if it were tightly covered and maintained in natural light for one month?

    • A.

      The water temperature would rapidly decrease.

    • B.

      The process of respiration in the snail would decrease.

    • C.

      The rate of reproduction of the fish would be affected.

    • D.

      The organisms would probably survive because materials would cycle.

    Correct Answer
    D. The organisms would probably survive because materials would cycle.
    Explanation
    If the aquarium is tightly covered and maintained in natural light for one month, the organisms would probably survive because materials would cycle. This means that the ecosystem within the aquarium would be able to sustain itself by recycling nutrients and other essential materials. The natural light would provide energy for photosynthesis by the plants, which would produce oxygen for the organisms to respire. The snail's respiration would not decrease significantly as it can still obtain oxygen from the water. The fish may be affected in terms of reproduction due to limited space and resources, but overall the ecosystem would be able to maintain a balance.

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  • 12. 

    A technique used to analyze pigments in spinach leaves is shown in the diagram below. This technique is known as

    • A.

      Paper chromatography

    • B.

      Gene manipulation

    • C.

      Dissection

    • D.

      Staining

    Correct Answer
    A. Paper chromatography
    Explanation
    The technique shown in the diagram involves using paper chromatography to analyze pigments in spinach leaves. Paper chromatography is a method used to separate and identify different components of a mixture, in this case, the pigments in the spinach leaves. It involves placing a small amount of the mixture (in this case, the pigment extract from the spinach leaves) on a strip of absorbent paper and allowing a solvent to move up the paper. As the solvent moves up the paper, it carries the different pigments with it, causing them to separate based on their solubility in the solvent. This technique is commonly used in biology and chemistry to analyze and identify various substances.

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 24, 2014
    Quiz Created by
    Fogellh
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