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WorksheetsEnzymes Y9
Total questions: 27
Worksheet time: 32mins
35* C
25* C
The enzyme will die and stop working
In a chemical reaction, ________ are what you have at the end
Products
Molecules
Reactants
Substances
The graphs show the reaction rate for an enzyme across a range of temperatures and pH.
Based on these data, this enzyme functions best as what temperature and pH?
Temperature of 27oC and a pH of 4
Temperature of 37oC and a pH of 6
Temperature of 40oC and a pH of 8
Temperature of 50oC and a pH of 10
If the experiment is repeated at pH 11, the observed activity level of the enzyme will most likely be
between the levels observed at pH 5 and pH 7.
lower than the level at pH 9
the same as the level at pH 7
greater than the level at pH 9
During which time interval is the reaction rate lowest?
0-1 minute
1-2 minutes
2-3 minutes
3-4 minutes
4-5 minutes
What are the products in this chemical reaction?
Which of the following is NOT a function of enzymes?
Acting as biological catalysts
Lowering activation energy
Speeding up chemical reactions
Being consumed in reactions
What happens to an enzyme when it is exposed to a pH level far from its optimal range?
It remains unchanged
It changes its substrate
It denatures and loses function
It becomes more active
In an enzyme-catalyzed reaction, what is the role of the active site?
To release energy
To change the enzyme's shape
To increase the temperature
To bind with the substrate
