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Unit 3 Concept 1 & 2 Review

Quiz by Catherine Tate

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34 questions
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  • Q1
    Which of the following is true about enzymes?
    They store genetic information
    They speed up chemical reactions
    They produce energy in cells
    They transport oxygen in the blood
    30s
  • Q2
    Which of the following is NOT a characteristic of enzymes?
    They are specific in their action
    They are used up in the reaction
    They work under specific temperature and pH conditions
    They speed up chemical reactions
    30s
  • Q3
    What is the primary function of enzymes in living organisms?
    To catalyze chemical reactions
    To store genetic information
    To transport nutrients
    To provide structural support
    30s
  • Q4
    Which of the following factors can affect enzyme activity?
    Temperature and pH
    Blood type and genetics
    Exercise and diet
    Amount of sunlight and rainfall
    30s
  • Q5
    What is the main function of enzymes in digestion?
    To regulate body temperature
    To break down macromolecules into smaller molecules
    To absorb nutrients from the bloodstream
    To produce hormones and enzymes
    30s
  • Q6
    Which of the following is an example of an enzyme?
    Chlorophyll
    Amylase
    Insulin
    Hemoglobin
    30s
  • Q7
    Which of the following best describes the role of enzymes in metabolism?
    They provide structural support to cells
    They transmit genetic information
    They regulate and facilitate metabolic reactions
    They act as energy storage molecules
    30s
  • Q8
    Which of the following is true about the structure of enzymes?
    Enzymes are carbohydrates that store energy.
    Enzymes are lipids that participate in metabolic reactions.
    Enzymes are DNA molecules that aid in cell division.
    Enzymes are proteins that act as catalysts in biological reactions.
    30s
  • Q9
    Which of the following is true about enzyme specificity?
    Enzymes exhibit high specificity for their substrates.
    Enzymes have no preference for specific substrates.
    Enzymes can bind to multiple substrates simultaneously.
    Enzymes can catalyze any chemical reaction.
    30s
  • Q10
    What is the active site of an enzyme?
    The active site is a region of the enzyme where the substrate binds and undergoes catalysis.
    The active site is a region of the enzyme that aids in enzyme transport.
    The active site is a region of the enzyme where cofactors are located.
    The active site is a region of the enzyme that provides structural stability.
    30s
  • Q11
    What is the function of coenzymes in enzyme-catalyzed reactions?
    Coenzymes break down substrates into products.
    Coenzymes assist enzymes by transferring chemical groups or electrons in reactions.
    Coenzymes provide structural stability to enzymes.
    Coenzymes inhibit enzyme activity.
    30s
  • Q12
    Which of the following is true about enzyme inhibition?
    Enzyme inhibition only occurs in the presence of cofactors.
    Enzyme inhibition always leads to enzyme activation.
    Enzyme inhibition can be reversible or irreversible.
    Enzyme inhibition only affects the shape of the enzyme.
    30s
  • Q13
    Which of the following is a correct description of the structure of ATP?
    A lipoprotein with three peptide chains attached.
    A nitrogenous base with three phosphate groups attached to a ribose sugar.
    A trimeric protein with three nucleotide subunits.
    A disaccharide with three phosphate groups attached.
    30s
  • Q14
    What is the primary function of ATP in cells?
    To transport molecules across the cell membrane.
    To provide energy for cellular processes.
    To store genetic information.
    To facilitate cell division.
    30s
  • Q15
    Which molecule is the primary energy source for cellular activities?
    Glucose
    DNA (Deoxyribonucleic Acid)
    ATP (Adenosine Triphosphate)
    RNA (Ribonucleic Acid)
    30s

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