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WorksheetsIB Biology Topic 2.5 Review
Total questions: 10
Worksheet time: 23mins
In an enzyme-catalyzed reaction, the _____ binds to the _____ .
Substance, enzyme
Substrate, enzyme
Substrate, active site
Substrate, allosteric site
An increase in which of these factors will guarantee an increase in enzyme activity?
Temperature
pH
Substrate concentration
Amount of enzyme present
With relation to enzyme and substrate, what does the term "successful collision" mean?
When the substrate bumps into the active site and sticks to it.
When a product is formed
When the substrate bumps into the active site
When the substrate bumps into the enzyme
This graph represents enzyme activity with relation to which factor?
Temperature
pH
Substrate concentration
This graph represents enzyme activity with relation to which factor?
Temperature
pH
Substrate concentration
This graph represents enzyme activity with relation to which factor?
Temperature
pH
Substrate concentration
How would you expect the optimum pH of enzymes to vary between the stomach and acidic hot springs?
The optimum pH would be roughly the same.
The optimum pH in acidic hot springs would be much lower than the stomach
The optimum pH in acidic hot springs would be much larger than the stomach
Depends on the enzyme.
How would you expect the optimum pH of enzymes to vary between the stomach and alkaline lakes?
The optimum pH would be roughly the same.
The optimum pH in alkaline lakes would be much lower than the stomach
The optimum pH in alkaline lakes would be much larger than the stomach
Depends on the enzyme.
Catalase is an enzyme produced in the liver. It decomposes hydrogen peroxide into water and oxygen gas. Where would you expect its optimum temperature to be?
0°C
40°C
100°C
It has no optimum temperature since the higher the temperature, the more collisions.
Describe the advantages of enzyme immobilization.
