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Factors Affecting Enzyme Activity

Daniel Brand 11 questions 2,666 views

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Questions in this quiz (11)

  1. 1The main reason why rate of enzyme action increases with temperature initially is...
    1. AThe kinetic energy of enzymes and substrates increases
    2. BTime passing, allowing more collisions to occur
    3. CThe enzymes become denatured
    4. DMore substrate is produced, therefore the enzymes become saturated
  2. 2The level of a condition at which enzymes work best is called the [blank_start]optimum[blank_end] temperature/pH/etc.
    1. Aoptimum
  3. 3Why do enzymes work less effectively in extreme pH, or in very high temperatures?
    1. ApH far from optimum affects bond interactions in the enzyme.
    2. BHigh temperatures provide enough kinetic energy to break bonds in the enzyme protein structure.
    3. CEnzymes become denatured.
    4. DSubstrates have very high kinetic energy and collide too quickly with enzymes.
    5. EEnzyme tertiary structure changes.
    6. FThe induced-fit hypothesis says that the active site tertiary structure remains constant when 'not occupied'.
  4. 4The optimum temperature for enzymes in the human body is 37 degrees C.
    1. ATrue
    2. BFalse
  5. 5Rate of reaction is proportional to..
    1. AThe number of ESCs formed per second.
    2. BThe number of enzyme proteins that become denatured by second.
    3. CThe optimum temperature for a specific enzyme.
    4. DThe solubility of ESCs formed in the reaction process.
  6. 6There is a [blank_start]positive[blank_end] correlation between substrate concentration and initial rate of reaction. However, past a point, the graph [blank_start]plateaus[blank_end]. This is because of [blank_start]a limiting factor[blank_end], which is the [blank_start]enzyme concentration[blank_end]. At this point and beyond, the enzymes are said to be [blank_start]saturated[blank_end].
    1. Apositive
    2. Bnegative
    3. Cinverse
    4. Dtrigonometric
    5. Eplateaus
    6. Fgoes the opposite way
    7. Gbecomes inverted
    8. Hdecreases
    9. Ia limiting factor
    10. Jextreme pH
    11. Kextreme temperature
    12. Ldenatured enzymes
    13. Menzyme concentration
    14. Nsubstrate concentration
    15. Oenzyme's optimum temperature
    16. Pspace available in the cell
    17. Qsaturated
    18. Rdenatured
    19. Sacidic
    20. Tdissolved
  7. 7Cells create one set of enzymes that last for the duration of the cell's life.
    1. ATrue
    2. BFalse
  8. 8Inhibitors that [blank_start]block[blank_end] the [blank_start]active site[blank_end] of enzymes are [blank_start]competitive[blank_end], whereas inhibitors that [blank_start]change[blank_end] the [blank_start]shape[blank_end] of enzymes are [blank_start]non-competitive[blank_end].
    1. Ablock
    2. Bacidify
    3. Cexpose
    4. Dsignal
    5. Eactive site
    6. Ftertiary structure
    7. Gsynthesis
    8. Hdegradation
    9. Icompetitive
    10. Jnon-competitive
    11. Kchange
    12. Lblock
    13. Mexpose
    14. Nprecipitate
    15. Oshape
    16. Pprimary structure
    17. Qkinetic energy
    18. Rnon-competitive
    19. Scompetitive
  9. 9Label the enzyme inhibition diagram.Image for question 9
    1. ANormal enzyme activity
    2. BCompetitive inhibitor
    3. CNon-competitive inhibitor
    4. DNormal enzyme activity
    5. ECompetitive inhibitor
    6. FNon-competitive inhibitor
    7. GNormal enzyme activity
    8. HCompetitive inhibitor
    9. INon-competitive inhibitor
  10. 10Which of the following statements are true about end product inhibition? Select all that apply.
    1. AMost metabolic reactions consist of one step.
    2. BAn end product inhibits an enzyme that is responsible for its synthesis.
    3. COne product of the metabolic pathway inhibits the overall pathway.
    4. DThe end product accumulates.

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Description
Biology (Enzymes) Quiz on Factors Affecting Enzyme Activity, created by Daniel Brand on 03/03/2017.
Language
English
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