Cell Biology- Ground Rules Of Metabolism

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| By Caroline Estrada
Caroline Estrada, Medical editor
Carolina, a dedicated researcher, scientist, and medical editor, contributes to the advancement of scientific knowledge and the dissemination of medical information.
Quizzes Created: 5 | Total Attempts: 3,103
| Attempts: 324
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  • 1/23 Questions

     Energy is neither created nor destroyed, but can be transferred from one form to another

    • True
    • False
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About This Quiz

This quiz will cover topics such as: Energy flow in the world of life, how enzymes work, the nature of metabolism, and metabolism everywhere.

Biochemistry Quizzes & Trivia

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  • 2. 

    What is energy?

    • The capacity to do work.

    • The electrical outlet giving energy for different appliances.

    • Work times displacement only.

    • The capacity to do work and stop work from happening.

    Correct Answer
    A. The capacity to do work.
    Explanation
    Energy is defined as the capacity to do work. Work is the transfer of energy from one object to another, or the transformation of energy from one form to another. Therefore, energy is the ability or potential to perform work or cause a change in a system. It is not limited to a specific source or form, but encompasses various types of energy such as mechanical, electrical, thermal, and chemical energy.

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  • 3. 

    Kinetic energy is the energy of _____.

    Correct Answer
    motion
    Explanation
    Kinetic energy is the energy possessed by an object due to its motion. When an object is in motion, it has the ability to do work and transfer energy to other objects. The faster an object moves, the more kinetic energy it possesses. Therefore, the correct answer is "motion" as it accurately represents the source of kinetic energy.

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  • 4. 

    Do we ever see cool air raising the temperature of a hot pan?

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    Heat would flow from a hot pan to air in a cool kitchen until the temperature of both is the same.

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  • 5. 

     Each time energy is transferred, some energy escapes as ____ (not useful for doing work)

    Correct Answer
    heat
    Explanation
    When energy is transferred from one form to another, such as from mechanical energy to thermal energy, some of the energy is lost as heat. Heat is a form of energy that cannot be used to do work. It is the random motion of particles in a substance and represents the transfer of energy due to temperature differences. This energy is typically dissipated into the surroundings and cannot be harnessed to perform useful tasks or work.

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  • 6. 

    The concept that enthropy increases spontaneously is the..

    • First law of thermodynamics

    • Second law of thermodynamics

    • Third law of thermodynamics

    • Fourth law of thermodynamics

    Correct Answer
    A. Second law of thermodynamics
    Explanation
    The second law of thermodynamics states that the entropy of an isolated system always increases or remains constant over time. Entropy is a measure of the disorder or randomness of a system. This law explains why certain processes, such as heat transfer from a hot object to a cold one, occur spontaneously and why it is impossible to have a 100% efficient heat engine. The concept that entropy increases spontaneously aligns with the second law of thermodynamics.

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  • 7. 

    What is the first law of thermodynamics?

    • The concept that enthropy increases spontaneously.

    • Work occur after energy is spent.

    • Energy does not appear from nowhere and does not vanish into nothing.

    • Energy is the capacity to do work.

    Correct Answer
    A. Energy does not appear from nowhere and does not vanish into nothing.
    Explanation
    The first law of thermodynamics states that energy cannot be created or destroyed, it can only be transferred or converted from one form to another. This means that energy is conserved in any process, and it cannot appear out of nowhere or disappear into nothingness. This law is also known as the law of conservation of energy.

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  • 8. 

    Is it true or false, that that the concept of enthropy applies to chemical bonding, because of the energy flow in the world of life that occurs by making and breaking chemical bonds?

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The concept of entropy applies to chemical bonding because when chemical bonds are formed or broken, there is a flow of energy in the world of life. Entropy is a measure of the disorder or randomness in a system, and this energy flow during chemical bonding contributes to the overall entropy of the system. Therefore, it is true that the concept of entropy applies to chemical bonding.

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  • 9. 

    Energy tends to spread, or disperge, almost immediately.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Energy tends to spread, or disperse, almost immediately. This is because energy naturally flows from areas of high concentration to areas of low concentration. When energy is concentrated in one place, it will naturally disperse and spread out to fill the surrounding space. This can be observed in various forms of energy, such as heat, sound, and light, as they all tend to spread out and fill their environment. Therefore, the statement that energy tends to spread almost immediately is true.

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  • 10. 

    Simply speaking, what is enthropy?

    • A measure of the heat that is released during an exothermic reaction.

    • A measure of how much the energy of a particular system has become dispersed.

    • A measure of difference between the past and present heat that happened during the heat transfer.

    • Simply a definition to describe heat.

    Correct Answer
    A. A measure of how much the energy of a particular system has become dispersed.
    Explanation
    Entropy is a measure of how much the energy of a particular system has become dispersed. It quantifies the level of disorder or randomness in a system. In other words, it measures the number of ways in which the energy of a system can be distributed among its particles or components. A higher entropy value indicates a higher degree of disorder, while a lower entropy value indicates a higher degree of order or organization.

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  • 11. 

    As heat flows from the pan into the air, the enthropy of the system....

    • Increases

    • Decreases

    • Stays the same

    Correct Answer
    A. Increases
    Explanation
    As heat flows from the pan into the air, the entropy of the system increases. This is because entropy is a measure of the disorder or randomness in a system. When heat is transferred, the molecules in the air become more energetic and move around more randomly, increasing the disorder in the system and therefore increasing the entropy.

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  • 12. 

    Can organisms replenish themselves with energy they harvest from some other place to maintain their complex organisation?

    • Indeed, they can.

    • No, they do not replenish themselves. They need to feed on something.

    Correct Answer
    A. Indeed, they can.
    Explanation
    Organisms have the ability to replenish themselves with energy that they harvest from external sources. This energy is used to maintain their complex organization and carry out various biological processes. They can obtain this energy through processes such as photosynthesis in plants or by consuming other organisms as food. This energy allows organisms to grow, reproduce, and carry out their normal functions, ensuring their survival and maintaining their complex organization.

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  • 13. 

    Electrochemical work is energy used in cells....

    • ....to stockpile, build, rearrange, and break apart substances

    • ....to move flagella and other cell structures

    • ....to move charged substances into or out of cytoplasm or an organelle compartment

    • ....to correctly perform tasks in a cell that need charges or electromgnetic forces to function

    Correct Answer
    A. ....to move charged substances into or out of cytoplasm or an organelle compartment
    Explanation
    Electrochemical work refers to the energy used in cells to move charged substances into or out of the cytoplasm or an organelle compartment. This process is essential for maintaining the proper balance of ions and molecules within the cell, as well as for transporting substances across cellular membranes. By utilizing electrochemical gradients, cells are able to actively transport ions and molecules, allowing them to perform various functions such as nutrient uptake, waste removal, and cell signaling. This energy expenditure is crucial for the overall functioning and homeostasis of the cell.

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  • 14. 

    Potential energy comes from the _______ energy.

    Correct Answer
    chemical
    Explanation
    Potential energy comes from the chemical energy. Chemical energy is a form of potential energy that is stored in the bonds of molecules. When these bonds are broken, the stored energy is released and can be converted into other forms of energy such as thermal, mechanical, or electrical energy. Therefore, the correct answer is chemical.

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  • 15. 

     During metabolic chemical reactions, some energy is lost but heat and cells can recapture it

    • True

    • False

    Correct Answer
    A. False
    Explanation
    During metabolic chemical reactions, some energy is lost as heat and cells cannot recapture it.

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  • 16. 

    Potential energy is the capacity to do work thanks to the __________. (A component of an object\person)

    Correct Answer
    molecules
    Explanation
    Potential energy is the capacity to do work, and in this context, it is attributed to the molecules. Molecules possess potential energy because of their arrangement and the forces between them. This energy can be converted into other forms, such as kinetic energy, when the molecules interact or move. Therefore, the molecules in an object or person have the potential to do work, making them the component responsible for potential energy.

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  • 17. 

     Entropy in the Universe is increasing because usable energy is decreasing. Can you remember what this term is called?  (Hint: 2 words)

    Correct Answer
    heat death
    Explanation
    The term "heat death" refers to the concept in thermodynamics that predicts the ultimate fate of the universe. It suggests that as usable energy in the universe decreases, entropy (disorder) increases, eventually leading to a state of maximum entropy where no energy is available for use. This state is often referred to as "heat death" because it implies a complete lack of energy transfer or any possibility of further work being done in the universe.

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  • 18. 

    Not all living things need a constant input of energy, some can make it themselves.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    They may be able to feed themselves, but all living things need a constant input of energy

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  • 19. 

     When an endergonic reaction is taking place, what happens to the enthropy?

    • ....it decreases for 2 atoms when a bond forms between them

    • ....it increases for 2 atoms when a bond forms in between them

    • ....it remains the same because no bonds are being formed, but are only entering the particular system

    • ...it decreases for the 2 atoms because a bond is being broken

    Correct Answer
    A. ....it decreases for 2 atoms when a bond forms between them
    Explanation
    When a bond forms between two atoms during an endergonic reaction, the entropy decreases. This is because the formation of a bond reduces the number of possible arrangements of the atoms, leading to a decrease in disorder or randomness. Therefore, the entropy decreases for the two atoms involved in the bond formation.

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  • 20. 

    The chemical work is an energy used in cells....

    • ....to stockpile, build, rearrange, and break apart substances

    • ....to move flagella and other cell structures

    • ....to move charged substances into or out of cytoplasm or an organelle compartment

    • ....the break and make chemical bonds for potential energy to be present.

    Correct Answer
    A. ....to stockpile, build, rearrange, and break apart substances
    Explanation
    The correct answer is "....to stockpile, build, rearrange, and break apart substances". Chemical work refers to the energy used by cells to perform various chemical reactions such as synthesizing molecules, breaking down substances, and rearranging components to maintain cellular processes. This energy is essential for the cell to carry out metabolic activities, maintain homeostasis, and support growth and development.

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  • 21. 

     The transfer of energy from another that form, generates heat. This is called ______. (Hint:_____ energy)

    Correct Answer
    thermal energy
    Thermal energy
    Explanation
    The transfer of energy from one form to another that generates heat is called thermal energy. Thermal energy refers to the energy that is produced by the movement of particles within a substance. It is a form of kinetic energy and is responsible for the sensation of heat. The answer "thermal energy" and "Thermal energy" both correctly explain this concept.

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  • 22. 

    Mechanical work is energy used in cells....

    • ....to move charged substances into or out of cytoplasm or an organelle compartment

    • ....to move flagella and other cell structures

    • ....to ensure the tasks in a cell are performed

    • ....to stockpile, build, rearrange, and break apart substances

    Correct Answer
    A. ....to move flagella and other cell structures
  • 23. 

    Check off where there are no entropy changes.

    • Hot pans cool off

    • Water spontaneously flows down Niagara Falls

    • A dog barking

    • The air in a tire will blow out into the atmosphere if the Tire’s walls are punctured

    • When gasoline is mixed with air in a car’s cylinders, it reacts with oxygen if a spark is introduced

    • The pressing of keyboard keys

    • Ice melting in a warm room

    • People jumping on a big plastic ball

    • A beaker going from 5ml to 5.1ml

    • When you pour cream into coffee and the liquids spontaneously mix

    Correct Answer
    A. A beaker going from 5ml to 5.1ml
    Explanation
    Congratulations, they are all enthropy changes! Except for one which talks about volume and not energy.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 01, 2011
    Quiz Created by
    Caroline Estrada
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