Multiple Choice
To which part of an enzyme will a specific substrate bind?
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7. Energy and Metabolism
Enzymes
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What determines the specific reaction that an enzyme will catalyze?
A
The shape of its active site
B
The concentration of substrate
C
The pH level of the solution
D
The temperature of the environment
Verified step by step guidance1
Understand that enzymes are biological catalysts that speed up chemical reactions in the body by lowering the activation energy required for the reaction.
Recognize that the specificity of an enzyme is primarily determined by the shape of its active site, which is a unique region where the substrate molecules bind.
Consider how the concentration of substrate can affect the rate of reaction, as higher concentrations can increase the likelihood of substrate molecules colliding with the enzyme's active site.
Acknowledge that the pH level of the solution can influence enzyme activity, as extreme pH levels can lead to denaturation, altering the shape of the enzyme and its active site.
Understand that temperature can also affect enzyme activity; optimal temperatures increase reaction rates, but extreme temperatures can denature the enzyme, changing the shape of the active site.
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