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C1.1.8. Effects of temperature, pH and substrate concentration on the rate of enzyme activity
Description
[N/A]Directly related questions
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22N.1A.SL.TZ0.9:
The activity of amylase from two bacterial species and a fungus was measured at different pH levels and constant temperature. The results are shown in the graph.
[Source: Held, P., 2012. Enzymatic Digestion of Polysaccharides. Part II: Optimization of Polymer Digestion and Glucose Production in Microplates. Available at: https://www.agilent.com/cs/library/applications/enzymatic-digestion-of-polysaccharides-part-II-5994-3304EN-agilent.pdf.]
Which statement about the effect of pH on amylase can be concluded?
A. A. oryzae amylase has the highest optimum pH.
B. A change in pH affects amylase most in B. licheniformis.
C. The optimum pH is 6 in B. subtilis.
D. Amylase activity at pH 8 is the lowest in B. licheniformis.
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22N.1A.SL.TZ0.9:
The activity of amylase from two bacterial species and a fungus was measured at different pH levels and constant temperature. The results are shown in the graph.
[Source: Held, P., 2012. Enzymatic Digestion of Polysaccharides. Part II: Optimization of Polymer Digestion and Glucose Production in Microplates. Available at: https://www.agilent.com/cs/library/applications/enzymatic-digestion-of-polysaccharides-part-II-5994-3304EN-agilent.pdf.]
Which statement about the effect of pH on amylase can be concluded?
A. A. oryzae amylase has the highest optimum pH.
B. A change in pH affects amylase most in B. licheniformis.
C. The optimum pH is 6 in B. subtilis.
D. Amylase activity at pH 8 is the lowest in B. licheniformis.
- SPM.2.SL.TZ0.8b: Explain the relationship between temperature and the activity of enzymes.
- SPM.2.SL.TZ0.8b: Explain the relationship between temperature and the activity of enzymes.
- SPM.2.SL.TZ0.8b: Explain the relationship between temperature and the activity of enzymes.
- SPM.2.SL.TZ0.b: Explain the relationship between temperature and the activity of enzymes.
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19M.1A.SL.TZ1.9:
The graph shows the results of an investigation into the activity of turnip peroxidase. The accumulation of the product of the reaction catalysed by the enzyme is shown at different pH values.
[Source: © International Baccalaureate Organization 2019]
Based on the data in the graph, what is most probably the optimum pH for turnip peroxidase?
A. Between 3 and 5
B. Between 10 and 11
C. Between 7 and 8
D. Between 9 and 10
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19M.1A.SL.TZ1.9:
The graph shows the results of an investigation into the activity of turnip peroxidase. The accumulation of the product of the reaction catalysed by the enzyme is shown at different pH values.
[Source: © International Baccalaureate Organization 2019]
Based on the data in the graph, what is most probably the optimum pH for turnip peroxidase?
A. Between 3 and 5
B. Between 10 and 11
C. Between 7 and 8
D. Between 9 and 10
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19M.1A.SL.TZ1.9:
The graph shows the results of an investigation into the activity of turnip peroxidase. The accumulation of the product of the reaction catalysed by the enzyme is shown at different pH values.
[Source: © International Baccalaureate Organization 2019]
Based on the data in the graph, what is most probably the optimum pH for turnip peroxidase?
A. Between 3 and 5
B. Between 10 and 11
C. Between 7 and 8
D. Between 9 and 10
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19M.1A.SL.TZ1.9:
The graph shows the results of an investigation into the activity of turnip peroxidase. The accumulation of the product of the reaction catalysed by the enzyme is shown at different pH values.
[Source: © International Baccalaureate Organization 2019]
Based on the data in the graph, what is most probably the optimum pH for turnip peroxidase?
A. Between 3 and 5
B. Between 10 and 11
C. Between 7 and 8
D. Between 9 and 10
- 19M.1B.SL.TZ1.1a: State the effect immobilization of lipase has on its optimum temperature.
- 19M.1B.SL.TZ1.a: State the effect immobilization of lipase has on its optimum temperature.
- 19M.1B.SL.TZ1.1a: State the effect immobilization of lipase has on its optimum temperature.
- 19M.1B.SL.TZ1.a: State the effect immobilization of lipase has on its optimum temperature.
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19M.1B.SL.TZ1.1b:
The graph of the effect of pH on immobilized lipase activity does not allow for the determination of optimum pH precisely. Explain how a more exact value for the optimum pH could be determined.
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19M.1B.SL.TZ1.b:
The graph of the effect of pH on immobilized lipase activity does not allow for the determination of optimum pH precisely. Explain how a more exact value for the optimum pH could be determined.
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19M.1B.SL.TZ1.1b:
The graph of the effect of pH on immobilized lipase activity does not allow for the determination of optimum pH precisely. Explain how a more exact value for the optimum pH could be determined.
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19M.1B.SL.TZ1.b:
The graph of the effect of pH on immobilized lipase activity does not allow for the determination of optimum pH precisely. Explain how a more exact value for the optimum pH could be determined.
- 19M.1B.SL.TZ1.1c: Based on these experimental results, suggest one advantage of immobilizing lipase.
- 19M.1B.SL.TZ1.c: Based on these experimental results, suggest one advantage of immobilizing lipase.
- 19M.1B.SL.TZ1.1c: Based on these experimental results, suggest one advantage of immobilizing lipase.
- 19M.1B.SL.TZ1.c: Based on these experimental results, suggest one advantage of immobilizing lipase.
- 19N.1A.SL.TZ0.10: What effect do changes in pH have on enzymes? A. All enzymes increase in activity as pH...
- 19N.1A.SL.TZ0.10: What effect do changes in pH have on enzymes? A. All enzymes increase in activity as pH...
- 19N.1A.SL.TZ0.10: What effect do changes in pH have on enzymes? A. All enzymes increase in activity as pH...
- 19N.1A.SL.TZ0.10: What effect do changes in pH have on enzymes? A. All enzymes increase in activity as pH...
- 19N.1B.SL.TZ0.2a: State another independent variable that would affect the activity of this enzyme.
- 19N.1B.SL.TZ0.a: State another independent variable that would affect the activity of this enzyme.
- 19N.1B.SL.TZ0.2a: State another independent variable that would affect the activity of this enzyme.
- 19N.1B.SL.TZ0.a: State another independent variable that would affect the activity of this enzyme.
- 19N.1B.SL.TZ0.2b: Outline the measurements which would need to be taken to determine the activity of the...
- 19N.1B.SL.TZ0.b: Outline the measurements which would need to be taken to determine the activity of the...
- 19N.1B.SL.TZ0.2b: Outline the measurements which would need to be taken to determine the activity of the...
- 19N.1B.SL.TZ0.b: Outline the measurements which would need to be taken to determine the activity of the...
- 21M.1A.SL.TZ1.8: The graph shows the progress of the same enzyme-controlled reaction at two different...
- 21M.1A.SL.TZ1.8: The graph shows the progress of the same enzyme-controlled reaction at two different...
- 21M.1A.SL.TZ1.8: The graph shows the progress of the same enzyme-controlled reaction at two different...
- 21M.1A.SL.TZ1.8: The graph shows the progress of the same enzyme-controlled reaction at two different...
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21M.2.SL.TZ2.3d:
Outline one factor that could affect the activity of Rubisco.
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21M.2.SL.TZ2.3d:
Outline one factor that could affect the activity of Rubisco.
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21M.2.SL.TZ2.d:
Outline one factor that could affect the activity of Rubisco.
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21M.2.SL.TZ2.3d:
Outline one factor that could affect the activity of Rubisco.
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21M.2.SL.TZ2.3d:
Outline one factor that could affect the activity of Rubisco.
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21M.2.SL.TZ2.d:
Outline one factor that could affect the activity of Rubisco.
- 22M.1A.SL.TZ1.5: The graph shows the activity of an enzyme at various temperatures. The pH of the experiment was...
- 22M.1A.SL.TZ1.5: The graph shows the activity of an enzyme at various temperatures. The pH of the experiment was...
- 22M.1A.SL.TZ1.5: The graph shows the activity of an enzyme at various temperatures. The pH of the experiment was...
- 22M.1A.SL.TZ1.5: The graph shows the activity of an enzyme at various temperatures. The pH of the experiment was...
- 22M.1A.SL.TZ1.8: The graph shows enzyme activity plotted against temperature. What is the reason for the...
- 22M.1A.SL.TZ1.8: The graph shows enzyme activity plotted against temperature. What is the reason for the...
- 22M.1A.SL.TZ1.8: The graph shows enzyme activity plotted against temperature. What is the reason for the...
- 22M.1A.SL.TZ1.8: The graph shows enzyme activity plotted against temperature. What is the reason for the...
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22M.2.SL.TZ2.7a:
Outline, using graphs, the effect of different factors that influence enzyme activity.
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22M.2.SL.TZ2.7a:
Outline, using graphs, the effect of different factors that influence enzyme activity.
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22M.2.SL.TZ2.a:
Outline, using graphs, the effect of different factors that influence enzyme activity.
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22M.2.SL.TZ2.7a:
Outline, using graphs, the effect of different factors that influence enzyme activity.
-
22M.2.SL.TZ2.7a:
Outline, using graphs, the effect of different factors that influence enzyme activity.
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22M.2.SL.TZ2.a:
Outline, using graphs, the effect of different factors that influence enzyme activity.
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22M.2.SL.TZ2.5a:
Explain the decrease in activity of the enzyme on either side of the optimum temperature.
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22M.2.SL.TZ2.5a:
Explain the decrease in activity of the enzyme on either side of the optimum temperature.
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22M.2.SL.TZ2.a:
Explain the decrease in activity of the enzyme on either side of the optimum temperature.
-
22M.2.SL.TZ2.5a:
Explain the decrease in activity of the enzyme on either side of the optimum temperature.
-
22M.2.SL.TZ2.5a:
Explain the decrease in activity of the enzyme on either side of the optimum temperature.
-
22M.2.SL.TZ2.a:
Explain the decrease in activity of the enzyme on either side of the optimum temperature.
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23M.1A.SL.TZ2.8:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
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23M.1A.SL.TZ2.9:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
-
23M.1A.SL.TZ2.8:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
-
23M.1A.SL.TZ2.9:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
-
23M.1A.SL.TZ2.8:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
-
23M.1A.SL.TZ2.9:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
-
23M.1A.SL.TZ2.8:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
-
23M.1A.SL.TZ2.9:
In the grass plant Halopyrum mucronatum, the enzyme amylase breaks bonds in polysaccharides during germination. The graph shows how the activity of the enzyme varies with the concentration of polysaccharide.
[Source: Material from: Siddiqui, Z.S. and Khan, M.A., The role of enzyme amylase in two germinating seed morphs of
Halopyrum mucronatum (L.) Stapf. in saline and non-saline environment, published 2011, Acta Physiologiae
Plantarum, reproduced with permission of SNCSC.]What is the reason for the curve levelling off?
A. There is insufficient substrate for the enzyme to act on.
B. The product acts as an enzyme inhibitor.
C. The enzymes have all been consumed in the reaction.
D. All the enzyme active sites are occupied by substrate.
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23M.2.SL.TZ2.6a:
Explain how temperature affects enzymes.
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23M.2.SL.TZ2.6a:
Explain how temperature affects enzymes.
-
23M.2.SL.TZ2.a:
Explain how temperature affects enzymes.
-
23M.2.SL.TZ2.6a:
Explain how temperature affects enzymes.
-
23M.2.SL.TZ2.6a:
Explain how temperature affects enzymes.
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23M.2.SL.TZ2.a:
Explain how temperature affects enzymes.
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23M.1B.SL.TZ1.1a:
State the effect that immobilizing the enzyme had on the relative activity of the enzyme.
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23M.1B.SL.TZ1.a:
State the effect that immobilizing the enzyme had on the relative activity of the enzyme.
-
23M.1B.SL.TZ1.1a:
State the effect that immobilizing the enzyme had on the relative activity of the enzyme.
-
23M.1B.SL.TZ1.a:
State the effect that immobilizing the enzyme had on the relative activity of the enzyme.
- 23M.1B.SL.TZ1.1b: Identify one variable that should be kept constant while measuring enzyme activity at all...
- 23M.1B.SL.TZ1.b: Identify one variable that should be kept constant while measuring enzyme activity at all...
- 23M.1B.SL.TZ1.1b: Identify one variable that should be kept constant while measuring enzyme activity at all...
- 23M.1B.SL.TZ1.b: Identify one variable that should be kept constant while measuring enzyme activity at all...
- 23M.1B.SL.TZ1.1c: Evaluate the reliability of the results.
- 23M.1B.SL.TZ1.c: Evaluate the reliability of the results.
- 23M.1B.SL.TZ1.1c: Evaluate the reliability of the results.
- 23M.1B.SL.TZ1.c: Evaluate the reliability of the results.
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23M.1B.SL.TZ1.1d:
Using the information in the graph, describe how the experiment could be extended to determine the optimum temperature for immobilized HRP.
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23M.1B.SL.TZ1.d:
Using the information in the graph, describe how the experiment could be extended to determine the optimum temperature for immobilized HRP.
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23M.1B.SL.TZ1.1d:
Using the information in the graph, describe how the experiment could be extended to determine the optimum temperature for immobilized HRP.
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23M.1B.SL.TZ1.d:
Using the information in the graph, describe how the experiment could be extended to determine the optimum temperature for immobilized HRP.
- 23M.1B.SL.TZ2.2ai: State a variable that should be kept constant.
- 23M.1B.SL.TZ2.i: State a variable that should be kept constant.
- 23M.1B.SL.TZ2.2ai: State a variable that should be kept constant.
- 23M.1B.SL.TZ2.i: State a variable that should be kept constant.
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23M.1B.SL.TZ2.2aii:
Identify the independent variable.
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23M.1B.SL.TZ2.ii:
Identify the independent variable.
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23M.1B.SL.TZ2.2aii:
Identify the independent variable.
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23M.1B.SL.TZ2.ii:
Identify the independent variable.
- 23M.1B.SL.TZ2.2b: Outline the steps to produce a 10 % egg white solution.
- 23M.1B.SL.TZ2.b: Outline the steps to produce a 10 % egg white solution.
- 23M.1B.SL.TZ2.2b: Outline the steps to produce a 10 % egg white solution.
- 23M.1B.SL.TZ2.b: Outline the steps to produce a 10 % egg white solution.
- 23M.1B.SL.TZ2.2c: Each measurement was repeated several times. Explain the need for replicates of each treatment.
- 23M.1B.SL.TZ2.c: Each measurement was repeated several times. Explain the need for replicates of each treatment.
- 23M.1B.SL.TZ2.2c: Each measurement was repeated several times. Explain the need for replicates of each treatment.
- 23M.1B.SL.TZ2.c: Each measurement was repeated several times. Explain the need for replicates of each treatment.
- 23M.1B.SL.TZ2.2d: Using the data, deduce whether pretreatment with ultrasound is effective for hydrolysing proteins.
- 23M.1B.SL.TZ2.d: Using the data, deduce whether pretreatment with ultrasound is effective for hydrolysing proteins.
- 23M.1B.SL.TZ2.2d: Using the data, deduce whether pretreatment with ultrasound is effective for hydrolysing proteins.
- 23M.1B.SL.TZ2.d: Using the data, deduce whether pretreatment with ultrasound is effective for hydrolysing proteins.
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23M.1B.SL.TZ1.1a:
State the purpose of lime water in flask B.
-
23M.1B.SL.TZ1.a:
State the purpose of lime water in flask B.
-
23M.1B.SL.TZ1.1a:
State the purpose of lime water in flask B.
-
23M.1B.SL.TZ1.a:
State the purpose of lime water in flask B.
- 23M.1B.SL.TZ1.1b: Suggest a reason that the pot was covered with a plastic bag.
- 23M.1B.SL.TZ1.b: Suggest a reason that the pot was covered with a plastic bag.
- 23M.1B.SL.TZ1.1b: Suggest a reason that the pot was covered with a plastic bag.
- 23M.1B.SL.TZ1.b: Suggest a reason that the pot was covered with a plastic bag.
- 23M.1B.SL.TZ1.1c: Suggest a suitable control for this experiment.
- 23M.1B.SL.TZ1.c: Suggest a suitable control for this experiment.
- 23M.1B.SL.TZ1.1c: Suggest a suitable control for this experiment.
- 23M.1B.SL.TZ1.c: Suggest a suitable control for this experiment.
- 23M.1B.SL.TZ1.1d: The same apparatus was used in another experiment, but the potted plant was exposed to light....
- 23M.1B.SL.TZ1.d: The same apparatus was used in another experiment, but the potted plant was exposed to light....
- 23M.1B.SL.TZ1.1d: The same apparatus was used in another experiment, but the potted plant was exposed to light....
- 23M.1B.SL.TZ1.d: The same apparatus was used in another experiment, but the potted plant was exposed to light....