Multiple Choice
Which of the following molecules binds to the active site of an enzyme?
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7. Energy and Metabolism
Enzymes
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How would a change in temperature affect an enzyme's function?
A
It would have no effect on the enzyme's function.
B
It could denature the enzyme, reducing its activity.
C
It would increase the enzyme's activity indefinitely.
D
It would cause the enzyme to produce more substrate.
Verified step by step guidance1
Understand the role of enzymes: Enzymes are biological catalysts that speed up chemical reactions in cells. They have specific shapes that allow them to bind to substrates and facilitate reactions.
Learn about enzyme structure: Enzymes are proteins, and their function is highly dependent on their three-dimensional structure. This structure is sensitive to changes in environmental conditions, such as temperature.
Explore the effect of temperature on enzymes: Temperature can affect enzyme activity by altering the enzyme's structure. Moderate increases in temperature can increase enzyme activity by providing more kinetic energy to the molecules involved.
Consider the concept of denaturation: If the temperature rises too high, it can cause the enzyme to denature. Denaturation involves the unfolding of the enzyme's structure, which can lead to a loss of function because the enzyme can no longer bind to its substrate effectively.
Evaluate the consequences of denaturation: When an enzyme is denatured, its activity is reduced or stopped entirely. This is because the active site, where the substrate binds, is altered and can no longer facilitate the reaction.
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