Biology Quiz: Trivia Questions On Enzymes!

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About This Quiz

Explore the fascinating world of enzymes with our Biology Quiz! This quiz covers various aspects of enzymes, including their nature as proteins, optimal conditions, and specific functions. Perfect for learners looking to understand biological catalysts and their roles in biochemical reactions.

Biology Quiz: Trivia Questions On Enzymes! - Quiz

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  • 2. 

    Enzymes are reaction specific ( each reaction has a specific enzyme that catalyzes it)

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Enzymes are proteins that act as catalysts in biochemical reactions. Each enzyme has a specific shape and structure that allows it to bind to a particular substrate and facilitate a specific reaction. This specificity ensures that enzymes only catalyze the reaction they are designed for, preventing unwanted side reactions. Therefore, it is true that enzymes are reaction-specific, with each reaction having a specific enzyme that catalyzes it.

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  • 3. 

    A Enzyme is a              that functions as a biological catalyst

    Correct Answer
    Protein
    Substance
    Catalyst
    Reaction
    Explanation
    Enzymes are proteins that act as biological catalysts, speeding up chemical reactions in living organisms. They are made up of amino acids and have a specific three-dimensional structure that allows them to bind to specific substrates and facilitate the conversion of reactants into products. Enzymes are essential for various physiological processes such as digestion, metabolism, and DNA replication. Therefore, the correct answer includes all the options: protein, substance, catalyst, and reaction.

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  • 4. 

    Which of the following is true about enzymes?

    • Enzymes only work when conditions are prefect for them.

    • They are all dependent on certain factors like Temperature and pH.

    • When the shape of the enzyme is lost – this is called DENATURING.

    • All of the above.

    Correct Answer
    A. All of the above.
    Explanation
    Enzymes are biological catalysts that speed up chemical reactions in living organisms. They are highly specific and only work under optimal conditions, such as specific temperature and pH levels. If the conditions deviate from the optimal range, the enzyme's activity may decrease or cease altogether. Denaturation refers to the loss of the enzyme's three-dimensional structure, which can be caused by factors like high temperature or extreme pH. Therefore, all of the statements mentioned in the options are true about enzymes.

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  • 5. 

    Enzymes end in - ase 

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Enzymes are biological molecules that act as catalysts in various biochemical reactions. They are responsible for speeding up the rate of these reactions by lowering the activation energy required. Enzymes are typically named based on the type of reaction they catalyze, and their names often end in -ase. This naming convention makes it easier to identify and classify different enzymes based on their functions. Therefore, the statement "Enzymes end in -ase" is true.

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  • 6. 

                    is required to start a reaction.

    Correct Answer
    Energy
    Explanation
    Energy is required to start a reaction. In chemical reactions, a certain amount of energy is needed to break the existing bonds in the reactant molecules and form new bonds in the product molecules. This energy, known as the activation energy, is necessary to overcome the energy barrier and initiate the reaction. Without energy, the reactant molecules would remain stable and the reaction would not occur. Therefore, energy is crucial for the initiation of a reaction.

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  • 7. 

    LForming and breaking bonds requires             depending upon what kind of a reaction you have.

    Correct Answer
    energy
    Explanation
    The process of forming and breaking bonds in chemical reactions requires energy. This energy is needed to overcome the forces holding the atoms together in a molecule so that new bonds can be formed or existing bonds can be broken. The amount of energy required depends on the type of reaction and the specific molecules involved.

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  • 8. 

    Which of these statements are true about enzymes?

    • Different enzymes have different perfect conditions

    • Chemical reactions take place in an organism for very few purposes

    • An enzyme can be denatured by temperature and pH if they are not OPTIMUM (perfect) for that particular enzyme.

    Correct Answer(s)
    A. Different enzymes have different perfect conditions
    A. An enzyme can be denatured by temperature and pH if they are not OPTIMUM (perfect) for that particular enzyme.
    Explanation
    Enzymes are biological catalysts that speed up chemical reactions in living organisms. One of the true statements about enzymes is that different enzymes have different perfect conditions. This means that each enzyme has an optimal temperature, pH, and other environmental factors at which it functions most efficiently. Another true statement is that an enzyme can be denatured by temperature and pH if they are not optimum for that particular enzyme. This means that extreme temperatures or pH levels can disrupt the enzyme's structure and function, rendering it ineffective.

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  • 9. 

    Which are the correct definitions?

    • Many enzymes exist for different purposes with very specific reactions

    • Metabolic reactions – chemical reactions that take place in an organism for various purposes such as respiration, digestion, photosynthesis.

    • Since water is needed in some chemical reactions, living organisms need a source of energy

    Correct Answer(s)
    A. Many enzymes exist for different purposes with very specific reactions
    A. Metabolic reactions – chemical reactions that take place in an organism for various purposes such as respiration, digestion, photosynthesis.
    Explanation
    The correct answer is "Many enzymes exist for different purposes with very specific reactions" and "Metabolic reactions – chemical reactions that take place in an organism for various purposes such as respiration, digestion, photosynthesis." These definitions accurately describe the concept of enzymes and metabolic reactions. Enzymes are specialized proteins that catalyze specific reactions in living organisms, and metabolic reactions refer to the chemical reactions that occur within an organism for various essential processes like respiration, digestion, and photosynthesis.

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  • 10. 

    Which is the right optimal pH for most enzymes and stomach enzymes?

    • PH 6 - 8 for most enzymes.

    • PH 5 - 9 for most enzymes.

    • PH of 2 for stomach enzymes

    • PH of 4 for stomach enzymes

    Correct Answer(s)
    A. pH 6 - 8 for most enzymes.
    A. pH of 2 for stomach enzymes
    Explanation
    Most enzymes function optimally within a pH range of 6 to 8. This pH range provides the ideal conditions for the enzyme to catalyze reactions efficiently. Stomach enzymes, on the other hand, require a more acidic environment to function properly. The optimal pH for stomach enzymes is around 2. This low pH helps in the digestion of food in the stomach.

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  • 11. 

    Which are true?

    • Microorganisms that live in very high temperatures are isolated (from hot springs)

    • 85 Deg. C or higher is their optimal temp.

    • They are grown in fermeter like Penicillum

    • The liquid these microorganisms make is isolated and purified for use.

    • The liquid contains the needed enzyme.

    • Microorganisms that live in very low temperatures are isolated (from hot springs)

    • The liquid these microorganisms make is isolated and condensed for use.

    Correct Answer(s)
    A. Microorganisms that live in very high temperatures are isolated (from hot springs)
    A. 85 Deg. C or higher is their optimal temp.
    A. They are grown in fermeter like Penicillum
    A. The liquid these microorganisms make is isolated and purified for use.
    A. The liquid contains the needed enzyme.
    Explanation
    This answer correctly states that microorganisms that live in very high temperatures are isolated from hot springs. It also correctly states that their optimal temperature is 85 degrees Celsius or higher. Additionally, it mentions that these microorganisms are grown in a fermenter like Penicillum, and the liquid they produce is isolated and purified for use. It also correctly states that the liquid contains the needed enzyme.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 06, 2012
    Quiz Created by
    Jeramiah_z_rocks
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