Enzymes
21 minutes ago
maryburdgick
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19 QuestionsShow answers
  • Question 1
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    Q. What is a substance called if it speeds up a chemical reaction?
    answer choices
    reusable
    catalyst
    specific
    fragile
  • Question 2
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    Q. The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
    answer choices
    Enzymes increase the energy of the reactants.
    Enzymes decrease the energy level of the products.
    Enzyme decrease the activation energy of the reaction.
    Enzymes reverse the direction of the reaction.
  • Question 3
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    Q. Based on the graph, what is the optimal temperature for this enzyme? 
    answer choices
    15oC
    40oC
    30oC
    35oC
  • Question 4
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    Q. In the diagram, what is letter A? 
    answer choices
    product
    substrate
    enzyme-substrate complex
    active site
  • Question 5
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    Q. Enzymes are...
    answer choices
    nucleic acids
    proteins
    lipids
    carbohydrates
  • Question 6
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    Q. What is the function of an enzyme?
    answer choices
    enzymes break themselves into small pieces
    enzymes slow down chemical reactions
    enzymes speed up chemical reactions
    enzymes combine products to form reactants 
  • Question 7
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    Q. Enzymes speed up reaction rates by changing...
    answer choices
    Activation Energy
    pH
    Hydrogen Bonds
    Kinetic Energy
  • Question 8
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    Q. Letter D...
    answer choices
    active site
    enzyme
    substrate
    products
  • Question 9
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    Q. Letter B...
    answer choices
    active site
    enzyme
    substrate
    products
  • Question 10
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    Q. Letter C...
    answer choices
    active site
    enzymes
    substrate
    products
  • Question 11
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    Q. Letter E...
    answer choices
    active site
    enzyme
    substrate
    products
  • Question 12
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    Q. With what 3 letters do enzymes typically end?
    answer choices
    -ose
    -ase
    -ese
    -tic
  • Question 13
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    Q. Any substance that is acted upon by an enzyme is called a(n)?
    answer choices
    Coenzyme
    Substrate
    Vitamin
    Polypeptide
  • Question 14
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    Q. Which of the following conclusions can be drawn from this graph?
    answer choices
    The optimum pH of the enzyme is 6.6.
    The optimum pH of the enzyme is 5.8
    The enzyme’s activity increases as pH increases 5.0 to 9.0
    The enzyme’s activity is greater around pH of 8.0 .
  • Question 15
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    Q.

    What happens when enzymes are heated to a high temperature?

    answer choices

    The enzymes die.

    The shapes of the enzyme are altered.

    The enzymes' amino acid sequence changes.

    The enzymes remain the same

  • Question 16
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    Q. Enzymes will make a reaction go _______ and use ______ energy.
    answer choices
    faster, less
    faster, more
    slower, less
    slower, more
  • Question 17
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    Q. What happens to an enzyme when it is denatured?
    answer choices
    Activation energy is lowered.
    It becomes stronger.
    It loses its shape.
    Activation energy is raised.
  • Question 18
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    Q. Every enzyme has a optimal temperature and pH. True or False?
    answer choices
    True 
    False
  • Question 19
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    Q. Enzymes are composed of which of the following monomers? 
    answer choices
    amino acids
    carbohydrates
    nucleotides
    monosaccharides
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