Welcome to the Quiz!
This quiz contains 13 questions from a mix of 1 subtopics.
Which of the following factors may cause an enzyme to denature?
(Select all that apply)
substrate concentration
pH
enzyme concentration
temperature
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When an enzyme's active site changes shape and the substrate no longer fits, the enzyme is described as being .
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Give 4 factors that affect the rate of enzyme-catalysed reactions
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True or False? High temperatures can cause enzymes to denature.
true
false
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The temperature that an enzyme works fastest at is known as its temperature.
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Describe what happens when enzymes are heated past their optimum temperature
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Which of the following ions affect bonding in enzymes?
(Select all that apply)
Cl-
H+
Na+
OH-
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If an enzyme is too far away from its optimum pH, the site change shape and the enzyme denatures.
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Which of the following chemical bonds are broken when an enzyme is too far away from its optimum pH?
(Select all that apply)
ionic
covalent
hydrogen
disulphide
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When substrate concentration is increased, the enzyme concentration can become the factor.
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True or False? Increasing the enzyme concentration can cause enzymes to denature.
true
false
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The graph above shows how increasing enzyme concentration affects the rate of an enzyme-catalysed reaction.
What is limiting the rate of reaction at point 1?
enzyme concentration
temperature
substrate concentration
pH
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The graph above shows how increasing substrate concentration affects the rate of an enzyme-catalysed reaction.
Why does the rate of reaction plateau at point 2?
the substrate concentration is the limiting factor.
the enzyme concentration is the limiting factor.
the enzyme is beginning to denature
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