Practice Questions Set On Energy Quiz

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Quizzes Created: 1 | Total Attempts: 419
Questions: 10 | Attempts: 419

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Practice Questions Set On Energy Quiz - Quiz

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Questions and Answers
  • 1. 

    Is energy is defined as the capacity to do work?

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Yes, energy is defined as the capacity to do work. Energy is the ability or capacity to perform work or cause a change in an object or system. It can exist in various forms such as kinetic, potential, thermal, electrical, chemical, and nuclear energy. The concept of energy is fundamental in physics and is often described as the ability to do work or transfer heat. Therefore, the statement that energy is defined as the capacity to do work is correct.

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  • 2. 

    Why is water not considered food?

    • A.

      Too much oxygen.

    • B.

      It does not have ATP.

    • C.

      No calories to produce energy.

    • D.

      It creates proteins.

    Correct Answer
    C. No calories to produce energy.
    Explanation
    Water is not considered food because it does not contain any calories that can be metabolized by the body to produce energy. While food provides the necessary nutrients and energy for the body, water is essential for hydration and various bodily functions but does not contribute to the caloric intake. Therefore, it is not classified as a food source.

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  • 3. 

    What are the two reasons organisms need food?(more than one answer)

    • A.

      Make energy

    • B.

      Get fat

    • C.

      Eat more food

    • D.

      Survive

    Correct Answer(s)
    A. Make energy
    D. Survive
    Explanation
    Organisms need food for two main reasons. Firstly, they need it to make energy. Food provides the necessary nutrients and calories that are converted into energy through various metabolic processes. This energy is essential for carrying out all the biological functions and activities of the organism. Secondly, organisms need food to survive. Food contains essential nutrients, vitamins, and minerals that are vital for the growth, development, and maintenance of the organism's body. Without proper nutrition from food, organisms would not be able to survive and thrive.

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  • 4. 

    How do heterotrophs and autotrophs differ in the way they obtain energy?

    • A.

      Heterotrophs are fish while autotrophs are mammals

    • B.

      Autotrophs get their energy from the sun while the heterotrophs eat autotrophs for energy.

    • C.

      Heterotrophs get their energy from the sun while the autotrophs eat heterotrophs for energy.

    • D.

      Autotrophs are fish while heterotrophs are mammels

    Correct Answer
    B. Autotrophs get their energy from the sun while the heterotrophs eat autotrophs for energy.
    Explanation
    Autotrophs, such as plants, obtain energy directly from the sun through the process of photosynthesis. They convert sunlight into chemical energy, which they use for their own growth and metabolism. On the other hand, heterotrophs, such as animals, cannot produce their own energy. Instead, they obtain energy by consuming autotrophs or other heterotrophs. This is done through the process of eating, where heterotrophs ingest and break down organic matter to release the stored energy. Therefore, autotrophs and heterotrophs differ in the way they obtain energy, with autotrophs directly harnessing sunlight and heterotrophs relying on consuming other organisms.

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  • 5. 

    What is excess energy usually given off as?

    • A.

      Kinetic energy

    • B.

      Chemical energy

    • C.

      Light energy

    • D.

      Heat energy

    Correct Answer
    D. Heat energy
    Explanation
    Excess energy is typically released as heat energy. When an object or system has more energy than it can store or use, it is often converted into heat and dissipated into the surroundings. This is a common occurrence in various processes, such as chemical reactions, electrical circuits, and even the metabolism of living organisms. Heat energy is a form of energy transfer that results from the random motion of particles, and it is the most common form of energy released as a byproduct in many natural and artificial processes.

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  • 6. 

    Fungi are producers.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Fungi are not producers. Unlike plants, they cannot perform photosynthesis to produce their own food. Instead, fungi are decomposers or consumers, obtaining nutrients by breaking down organic matter or by parasitizing other organisms. They play a crucial role in ecosystems by recycling nutrients and breaking down dead organic material.

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  • 7. 

    What are the main sources of carbon dioxide in the ocean.(more than one answer)

    • A.

      Atmosphere

    • B.

      Erosion

    • C.

      Human activity

    • D.

      Respiration

    • E.

      Carbonate rocks

    Correct Answer(s)
    A. Atmosphere
    B. Erosion
    C. Human activity
    D. Respiration
    E. Carbonate rocks
    Explanation
    The main sources of carbon dioxide in the ocean include the atmosphere, erosion, human activity, respiration, and carbonate rocks. Carbon dioxide can dissolve in water from the atmosphere, contributing to its presence in the ocean. Erosion of land can release carbon dioxide into rivers and ultimately into the ocean. Human activities such as burning fossil fuels and deforestation also release carbon dioxide into the atmosphere, which can then be absorbed by the ocean. Respiration by marine organisms and decomposition of organic matter also produce carbon dioxide. Additionally, carbonate rocks can release carbon dioxide through weathering and dissolution processes.

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  • 8. 

    How is phosphorus important to living organisms.

    • A.

      Creates organic compounds

    • B.

      Creates energy

    • C.

      Creates matter

    • D.

      Creates heat

    Correct Answer
    A. Creates organic compounds
    Explanation
    Phosphorus is important to living organisms because it creates organic compounds. Organic compounds containing phosphorus, such as DNA and RNA, are essential for the storage and transmission of genetic information. Phosphorus is also a crucial component of ATP, the main energy currency of cells, and plays a role in various metabolic processes. Additionally, phosphorus is involved in the formation of bones and teeth, as well as the regulation of pH levels in the body. Overall, phosphorus is vital for the structure, function, and energy metabolism of living organisms.

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  • 9. 

    What is used by all types of cells as their basic energy source?

    • A.

      Energy

    • B.

      ATP

    • C.

      Phosphate

    • D.

      Light

    Correct Answer
    B. ATP
    Explanation
    ATP (adenosine triphosphate) is used by all types of cells as their basic energy source. It is often referred to as the "energy currency" of cells because it stores and releases energy when needed. ATP is produced in cellular respiration and provides the energy required for various cellular processes, such as muscle contraction, active transport, and synthesis of molecules. It is composed of adenosine and three phosphate groups, and the energy is released when the terminal phosphate group is hydrolyzed, forming ADP (adenosine diphosphate) and inorganic phosphate.

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  • 10. 

    What happens when a phosphate group is removed from ATP?

    • A.

      ADP

    • B.

      Still ATP

    • C.

      Energy!

    • D.

      I give up :(

    Correct Answer
    A. ADP
    Explanation
    When a phosphate group is removed from ATP (adenosine triphosphate), it becomes ADP (adenosine diphosphate). ATP is the primary energy currency of cells, storing and releasing energy as needed. When one of the phosphate groups is hydrolyzed, energy is released, and ATP is converted into ADP. This conversion allows the energy stored in ATP to be used for various cellular processes, such as muscle contractions, active transport, and chemical reactions. ADP can then be further converted back into ATP through the process of cellular respiration to replenish the energy stores.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 18, 2014
    Quiz Created by
    Vandeneng5
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